APA (7th ed.) Citation

Feldman, R. S. (1993). Understanding psychology (3rd ed.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Feldman, Robert S. Understanding Psychology. 3rd ed. New York [etc.]: McGraw-Hill, 1993.

MLA (9th ed.) Citation

Feldman, Robert S. Understanding Psychology. 3rd ed. McGraw-Hill, 1993.