Cita APA

Ludman, A., & Marshak, S. (2010). Laboratory manual for introductory geology. W.W. Norton.

Chicago Edition Citation

Ludman, Allan, i Stephen Marshak. Laboratory Manual for Introductory Geology. New York: W.W. Norton, 2010.

Cita MLA

Ludman, Allan, i Stephen Marshak. Laboratory Manual for Introductory Geology. W.W. Norton, 2010.