Cita APA (7a ed.)

Schuchert, C., & Dunbar, C. O. (1947). Outlines of historical geology (Fourth edition.). J. Wiley & Sons, inc.

Cita Chicago Style (17a ed.)

Schuchert, Charles, y Carl O. Dunbar. Outlines of Historical Geology. Fourth edition. New York: J. Wiley & Sons, inc, 1947.

Cita MLA (9a ed.)

Schuchert, Charles, y Carl O. Dunbar. Outlines of Historical Geology. Fourth edition. J. Wiley & Sons, inc, 1947.