Feldman, R. S. (1999). Understanding psychology (Fifth edition.). McGraw-Hill College.
Chicago Style aipamenaFeldman, Robert S. Understanding Psychology. Fifth edition. Boston: McGraw-Hill College, 1999.
MLA aipamenaFeldman, Robert S. Understanding Psychology. Fifth edition. McGraw-Hill College, 1999.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.