Citazione APA

Billings, M. P. (1974). Structural geology (3rd ed.). Prentice-Hall of India.

Stile di citazione Chicago

Billings, Marland P. Structural Geology. 3rd ed. New Delhi: Prentice-Hall of India, 1974.

Citazione MLA

Billings, Marland P. Structural Geology. 3rd ed. Prentice-Hall of India, 1974.