Feldman, R. S. (2009). Understanding psychology (9th ed.). McGraw-Hill.
Chicago Style aipamenaFeldman, Robert S. Understanding Psychology. 9th ed. New York: McGraw-Hill, 2009.
MLA aipamenaFeldman, Robert S. Understanding Psychology. 9th ed. McGraw-Hill, 2009.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.