APA aipamena

Hamblin, W. K. 1., & Howard, J. D. (1992). Exercises in physical geology. New York: Macmillan Pub. Co..

Chicago Style aipamena

Hamblin, W. Kenneth 1928-, và James D. Howard. Exercises in Physical Geology. New York: Macmillan Pub. Co., 1992.

MLA aipamena

Hamblin, W. Kenneth 1928-, và James D. Howard. Exercises in Physical Geology. New York: Macmillan Pub. Co., 1992.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.