Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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