How do you cite a quote with two authors in APA format?

The formats of referencing multiple authors are: If there are 2 authors then type in the authors by their last names and initials; use the ampersand instead of the Word "and." If there is 3-7 authors then separate authors with a comma. The last author should be preceded by an ampersand instead of "and." If there is more than 7 authors then mention the first six first followed by a ". . ." and then mention the last author. No need to use the ampersand.