APA (7th ed.) Citation

Ludman, A., & Coch, N. K. (1982). Physical geology. McGraw-Hill.

Chicago Style (17th ed.) Citation

Ludman, Allan, and Nicholas K. Coch. Physical Geology. New York: McGraw-Hill, 1982.

MLA (9th ed.) Citation

Ludman, Allan, and Nicholas K. Coch. Physical Geology. McGraw-Hill, 1982.