Cita APA (7th ed.)

Beerbower, J. R. (1960). Search for the past: An introduction to paleontology. Prentice-Hall.

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

Beerbower, James R. Search for the Past: An Introduction to Paleontology. Prentice-Hall, 1960.