Basic APA Format
Your paper should be typed, double-spaced on standard-sized paper (8.5" x 11") with 1" margins on all sides. You should use a clear font that is highly readable. APA recommends using 12 pt. Times New Roman font.
Reference citations in text are covered on pages 169-179 of the Publication Manual. What follows are some general guidelines for referring to the works of others in your essay.
For specific examples of how to create in-text citations use the Purdue Owl APA Citations: The Basics
If a Digital Object Identifier (DOI) is provided, you must include it in your citation. If a DOI is not provided use the journal's url. See examples below:
Cite an article with a DOI
Cite an article without a DOI
Cite a Book
(from Michigan State Libraries)
Great resource for examples of citing Business resources, which often contain content other than articles.