APA (7th ed.) Zitazioa
Wessel, H. (1981). Under the apple tree: Marrying, Birthing, Parenting. Bookmates International.
Chicago Style (17th ed.) Zitazioa
Wessel, Helen. Under the Apple Tree: Marrying, Birthing, Parenting. California: Bookmates International, 1981.
MLA (9th ed.) Zitazioa
Wessel, Helen. Under the Apple Tree: Marrying, Birthing, Parenting. Bookmates International, 1981.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.