APA (7e ed.) Bronvermelding

Sullivan, D. J. (1964). An introduction to philosophy (Rev. ed.). Bruce Pub.

Chicago (17e ed.) Bronvermelding

Sullivan, Daniel James. An Introduction to Philosophy. Rev. ed. Milwaukee: Bruce Pub, 1964.

MLA (9e ed.) Bronvermelding

Sullivan, Daniel James. An Introduction to Philosophy. Rev. ed. Bruce Pub, 1964.