Cita APA (7a ed.)

Billings, M. P. (1942). Structural geology (1a. ed.). Prentice-Hall.

Cita Chicago Style (17a ed.)

Billings, Marland P. Structural Geology. 1a. ed. New York: Prentice-Hall, 1942.

Cita MLA (8a ed.)

Billings, Marland P. Structural Geology. 1a. ed. Prentice-Hall, 1942.