APA (7e ed.) Bronvermelding

Titus, H. H. (1964). Living issues in philosophy (4th.ed.). American ook Co..

Chicago (17e ed.) Bronvermelding

Titus, Harold H. Living Issues in Philosophy. 4th.ed. New York: American ook Co., 1964.

MLA (9e ed.) Bronvermelding

Titus, Harold H. Living Issues in Philosophy. 4th.ed. American ook Co., 1964.