Cita APA (7th ed.)

Hamblin, W. K., & Howard, J. D. (1986). Exercises in physical geology (6th ed.). Macmillan Pub.

Cita Chicago (17th ed.)

Hamblin, W. Kenneth, i James D. Howard. Exercises in Physical Geology. 6th ed. New York: Macmillan Pub, 1986.

Cita MLA (9th ed.)

Hamblin, W. Kenneth, i James D. Howard. Exercises in Physical Geology. 6th ed. Macmillan Pub, 1986.