How To Reference An Essay Properly Displaying


DOI = digital object identifier

  • A DOI commonly identifies a journal articlebut it can also be found on other publication types including books.
  • All DOIs start with 10. and includes numbers and letters. Example: doi:10.1016/j.addbeh.2009.08.001
  • The DOI provides a permanent internet address for the item making it easy to locate.
  • You may search by DOI numbers in Library Search or to locate articles.

Doi in your reference list entry:

  • Always use the DOI if available (for print or online articles and books). 
  • No full stop at the end of a DOI. 


A new citing format for DOI was introduced by APA in March 2017. The new format includes https and the prefix


Oppenheimer, D., Zaromb, F., Pomerantz, J. R., Williams, J. C., & Park, Y. S. (2017). Improvement of writing skills during college: A multi-year cross-sectional and longitudinal study of undergraduate writing performance. Assessing Writing, 32, 12–27.

Notes: the following old DOI styles are still acceptable:



If there is no DOI for a online journal article or an e-book, include a URL in your reference.

Use the URL of a journal home page for journal articles without DOI

  • Use the URL of the journal homepage, NOT the full URL of the article, in your reference.

Finding a journal homepage URL:

  • You could do a Google search for the journal title (within double quotation marks), e.g. "new zealand management magazine" to find the journal's homepage

  • Or, go to the Library database Ulrichsweb, search by the journal title or the journal's ISSN to find the journal record. On the journal record page, find the journal URL for your reference.

Journals without a home page and no DOI:

This can happen to some discontinued journals, or journals archived in an archival database only. 

  • Use the database home page URL in your reference. See the example in the following section.  


Use a URL of a library database:

Resources retrieved from a library database, without a DOI:

If you use electronic resources without DOI, such as an ebook or a data set or a journal without a website, from a library database, You are required to include the URL of the database homepage in your reference.

  • Do not use the full URL of the source that you retrieved from a database.



An ebook "Small town sustainability: economic, social,and environmental innovation".

The URL on the ebook page is: 

Follow these examples closely for all layout, punctuation, spacing, capitalizing and italicizing.

When including a figure or a table from another source in your work, it is important to include appropriate citations.
1. Tables are numerical values or text displayed in rows and columns.

2. Figures are other illustrations such as graphs, charts, maps, drawings, photographs etc.

3. All Tables and Figures must be referred to in the main body of the text.
4. Number all Tables and Figures in the order they first appear in the text. 
5. Refer to them in the text by their number. For example:
               As shown in Table 2 … 
               As illustrated in Figure 3…
6. Each table or figure should be titled and captioned.

Tables reproduced in your text:

Each table should be displayed with a brief explanatory title.

Example of Title

Table 1. Hours of television viewing per week by age group


You must include a caption beneath the table. Use the following format - this format differs from the reference list format.  See note at bottom of this page regarding copyright permissions if publishing a table or a figure.

For examples of tables see APA Style Central

Format of Caption


Note. Reprinted [adapted] from “Title of article,” by A. B. Author and C. D. Author, Year, Journal Title, Volume, page number. Copyright Year by "Name of copyright holder".


Note. Reprinted [adapted] from Title of book (p. xx), by E. F. Author, Year, Place of Publication: Publisher. Copyright Year by "Name of copyright holder".


Figures reproduced in your text

Each figure should be displayed with a brief explanatory title. eg. Figure 3. Complex Theoretical Formulations

You must include a caption beneath the figure. Use the following format - references for figures are not required in your reference list.

For examples of figures see APA Style Central

Format of caption for figures adapted or copied directly from another source.


Figure X. A concise explanation of the figure. Adapted [reprinted] from “Title of article,” by A. Author, B. Author, and C. Author, Year, Journal Title, Volume, page number. Copyright Year by "Name of the copyright holder".


Figure X. A concise explanation of the figure. Adapted [reprinted] from Title of book 


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