Cita APA (7th ed.)

Gilluly, J. (1959). Principles of geology. W.H. Freeman.

Cita Chicago (17th ed.)

Gilluly, James. Principles of Geology. San Francisco: W.H. Freeman, 1959.

Cita MLA (9th ed.)

Gilluly, James. Principles of Geology. W.H. Freeman, 1959.