Q. How should I present the author(s)'s and/or editor(s)'s names in my reference in APA style?

APA Style (7th ed.)

Authors

• "Invert all individual author's names, providing the surname first, followed by a comma and the initials: Author, A.A. .... Provide surnames and initials for up to and including 20 authors. When there are two to 20 authors, use an ampersand before the final author's name: Author, A.A., Author, B.B., & Author, C.C." (American Psychological Association [APA], 2020, p. 286)
• "When there are 21 or more authors, include the first 19 authors' names, insert an ellipsis (but no ampersand), and then add the final author's name" (APA, 2020, p. 286).
• "Spell out the full name of a group author in the reference list entry, followed by a period: National Institute of Mental Health" (APA, 2020, p. 288). 

See pages 286-289 in the Publication Manual of the American Psychological Association for more information and examples. Please also see How Should I Reference an Author With "Jr." or "III" in his Name?, How Should I Reference a Work With an Author Listed as "With" in APA Style?, and How Do I Cite a Resource by "Anonymous" or Without a Stated Author in APA Style?.

Editors

• Begin reference entries for a resource authored by an editor (such as a book or special issue in a journal) with the last name of the editor(s), followed by first initial(s) and the abbreviation "Ed." or "Eds." in parentheses after the last editor's name (APA, 2020, p. 287)
• When referencing a chapter in an edited book, the editors' names appear after the title of the book and are not inverted; see How Do I Reference a Chapter of an Edited Book in APA Style? for more information and examples. 

For more information, please see pages 287-288 in the Publication Manual of the American Psychological Association.

Reference

American Psychological Association. (2020). Publication manual of the American Psychological Association (7th ed.). https://doi.org/10.1037/0000165-000