Cita APA

Dunbar, C. O., & Rodgers, J. (1961). Principles of stratigraphy. J. Wiley.

Citación estilo Chicago

Dunbar, Carl O., and John Rodgers. Principles of Stratigraphy. New York: J. Wiley, 1961.

Cita MLA

Dunbar, Carl O., and John Rodgers. Principles of Stratigraphy. New York: J. Wiley, 1961.