Nursing, education, and many of the sciences use APA citation style.
The final authority for APA is the American Psychological Association, specifically the Publication manual of the American Psychological Association (6th ed., 2010). The final authority for the bibliographic form used in your paper is your professor.
How to format your paper using APA Guidelines
For more information, visit the Purdue Online Writing Lab.
Additional help can be found below or at APA Style Help
A DOI (Digitial Object Identifier) is a unique code for an electronic document. The DOI will never change, even even if the URL changes.
Some citation formats require the DOI if there is one.
To look for a document's DOI: crossref.org.
To find a document using the DOI: click on the DOI or go to doi®.