Cita APA (7a ed.)
Stoval, W. J., & Brown, H. E. (1954). The principles of historical geology. Ginn.
Cita Chicago Style (17a ed.)
Stoval, Willis J., y Howard E. Brown. The Principles of Historical Geology. Boston: Ginn, 1954.
Cita MLA (9a ed.)
Stoval, Willis J., y Howard E. Brown. The Principles of Historical Geology. Ginn, 1954.
Precaución: Estas citas no son 100% exactas.