Cita APA (7th ed.)

Dunbar, C. O., & Rodgers, J. (1957). Principles of stratigraphy. Wiley.

Cita Chicago (17th ed.)

Dunbar, Carl Owen, i John Rodgers. Principles of Stratigraphy. New York: Wiley, 1957.

Cita MLA (9th ed.)

Dunbar, Carl Owen, i John Rodgers. Principles of Stratigraphy. Wiley, 1957.