Dokumentuaren aipamena

APA (7th ed.) Zitazioa
Olford. Development psychology a life span approach. David Enlow.
Chicago Style (17th ed.) Zitazioa
Olford. Development Psychology a Life Span Approach. Wheaton, Illinois: David Enlow.
MLA (9th ed.) Zitazioa
Olford. Development Psychology a Life Span Approach. David Enlow.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.