APA način citiranja (7. izdanje)
Glenn, P. J. (1980). Apologetics. A philosophic defense and explanation of the catholic religion (1a ed.). Tan books and publishers, inc.
Čikaški stil citiranja (17. izdanje)
Glenn, Paul J. Apologetics. A Philosophic Defense and Explanation of the Catholic Religion. 1a ed. Tan books and publishers, inc, 1980.
MLA način citiranja (9. izdanje)
Glenn, Paul J. Apologetics. A Philosophic Defense and Explanation of the Catholic Religion. 1a ed. Tan books and publishers, inc, 1980.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.