APA (7th ed.) Zitazioa

Michaels, F. (2007). Free fall. Zabra Books.

Chicago Style (17th ed.) Zitazioa

Michaels, Fern. Free Fall. New York: Zabra Books, 2007.

MLA (9th ed.) Zitazioa

Michaels, Fern. Free Fall. Zabra Books, 2007.