APA (7th ed.) Zitazioa

Penney. The Structures of Love. State University of New York Press.

Chicago Style (17th ed.) Zitazioa

Penney. The Structures of Love. State University of New York Press.

MLA (9th ed.) Zitazioa

Penney. The Structures of Love. State University of New York Press.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.