Cita APA (7a ed.)
Ager, D. V. (1963). Principles of paleoecology. McGraw-Hill.
Cita Chicago Style (17a ed.)
Ager, Derek V. Principles of Paleoecology. New York: McGraw-Hill, 1963.
Cita MLA (9a ed.)
Ager, Derek V. Principles of Paleoecology. McGraw-Hill, 1963.
Precaución: Estas citas no son 100% exactas.