APA (7e ed.) Bronvermelding

Gilluly, J., Waters, A. C., & Woodford, A. O. (1975). Principles of geology (4th ed. / rev. by James Gilluly.). W. H. Freeman.

Chicago (17e ed.) Bronvermelding

Gilluly, James, Aaron Clement Waters, en Alfred O. Woodford. Principles of Geology. 4th ed. / rev. by James Gilluly. San Francisco, Calif: W. H. Freeman, 1975.

MLA (9e ed.) Bronvermelding

Gilluly, James, et al. Principles of Geology. 4th ed. / rev. by James Gilluly. W. H. Freeman, 1975.