When a work has two authors, cite both names every time the reference occurs in text. For parenthetical citations, separate the the authors' names with an "&":
The names of corporate authors (e.g., corporations, associations, government agencies, etc.) are usually spelled out each time they appear in a text citation.
However, if the name is long and if the abbreviation is readily understandable, you may abbreviate the name in the second and subsequent citations.
Arrange two or more works by the same author by the year of publicaton. In-press citations will be listed last. Give the author's last name once and for each subsequent work, give only the date.
Same author, different works
For two or more works by different authors, list entries in alphabetical order by the first author's surname; separate the citations with semicolons.
Two or more works by different authors
To cite a specific part of a work, indicate details of the page, chapter, figure, etc. Always give page numbers for direct quotations.
Note: "Page" is abbreviated but not "Chapter".
The author-date method of citation requires that the last name of the author and the year of publication be inserted in the text at the
If the name of the author appears as part of the write-up, as in the first example, cite only the year of publication in parentheses, Otherwise, place both the name and the year, separated by a comma, in parentheses (as in the second example).
In rare cases, both the year and the author are given as part of the write-up. In this case, you can leave out the parentheses.
When a work has three, four, or five authors, cite all authors the first time the reference occurs; in subsequent citations, include only the surname of the first author followed by et al.,(with a period after al) and the year if it is the first citation of the reference within a paragraph.
First citation in text:
When a work has six or more authors, cite only the surname of the first author followed by et al. and the year for the first and subsequent citations.
When a work has no known author, cite the first few words of the reference list entry (usually the title) and the year. Use double quotation marks around the title of an article, a chapter, or a web page and italicize the title of a periodical, a book, a brochure, or a report.
If an author is specifically listed as anonymous, cite the word Anonymous, followed by a comma and the date.
In the Reference List (include Secondary Source):