Schuchert, C., & Dunbar, C. O. (1941). A textbook of geology: Part II historical geology (4a. ed.). John Wiley.
Cita Chicago Style (17a ed.)Schuchert, Charles, y Carl O. Dunbar. A Textbook of Geology: Part II Historical Geology. 4a. ed. New York: John Wiley, 1941.
Cita MLA (8a ed.)Schuchert, Charles, y Carl O. Dunbar. A Textbook of Geology: Part II Historical Geology. 4a. ed. John Wiley, 1941.
Precaución: Estas citas no son 100% exactas.