APA Style

Dunbar, C, O., Rodgers, J. (1957). Principles of Stratigraphy (Ed. Wiley Internasional). New York: John Wiley & Sons, Inc.

MLA Style

Dunbar, Carl, O.., Rodgers, John. "Principles of Stratigraphy". Ed. Wiley Internasional New York: John Wiley & Sons, Inc, 1957. Text.