Cita APA

Raup, D. M., & Stanley, S. M. (1978). Principles of paleontology (2nd ed.). W. H. Freeman.

Citación estilo Chicago

Raup, David M., and Steven M. Stanley. Principles of Paleontology. 2nd ed. San Francisco: W. H. Freeman, 1978.

Cita MLA

Raup, David M., and Steven M. Stanley. Principles of Paleontology. 2nd ed. W. H. Freeman, 1978.