APA (7th ed.) Zitazioa

Billings, M. P. (1965). Structural geology (2a. ed.). Prentice-Hall.

Chicago Style (17th ed.) Zitazioa

Billings, Marland P. Structural Geology. 2a. ed. Englewood Cliffs: Prentice-Hall, 1965.

MLA (9th ed.) Zitazioa

Billings, Marland P. Structural Geology. 2a. ed. Prentice-Hall, 1965.