Cita APA (7a ed.)
Olen, J. (1983). Persons and their world: An introduction to philosophy. McGraw-Hill.
Cita Chicago Style (17a ed.)
Olen, Jeffrey. Persons and Their World: An Introduction to Philosophy. New York: McGraw-Hill, 1983.
Cita MLA (9a ed.)
Olen, Jeffrey. Persons and Their World: An Introduction to Philosophy. McGraw-Hill, 1983.
Precaución: Estas citas no son 100% exactas.