APA (7th ed.) Citation

DUNBAR, C. O. a. R. (1957). Principles of stratigraphy. John Wiley.

Chicago Style (17th ed.) Citation

DUNBAR, Carl O. and RODGERS. Principles of Stratigraphy. New York: John Wiley, 1957.

MLA (9th ed.) Citation

DUNBAR, Carl O. and RODGERS. Principles of Stratigraphy. John Wiley, 1957.