APA (7th ed.) Zitazioa
Keenan, T. (2002). An introduction to child development. Sage Publications.
Chicago Style (17th ed.) Zitazioa
Keenan, Thomas. An Introduction to Child Development. Los Angeles: Sage Publications, 2002.
MLA (9th ed.) Zitazioa
Keenan, Thomas. An Introduction to Child Development. Sage Publications, 2002.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.