Cita APA

Beerbower, J. R., & Beerbower, J. R. (1960). Search for the past: An introduction to paleontology. Englewood Cliffs, N.J.: Prentice Hall.

Citación estilo Chicago

Beerbower, James R., y James R. Beerbower. Search for the Past: An Introduction to Paleontology. Englewood Cliffs, N.J.: Prentice Hall, 1960.

Cita MLA

Beerbower, James R., y James R. Beerbower. Search for the Past: An Introduction to Paleontology. Englewood Cliffs, N.J.: Prentice Hall, 1960.