APA-viite (7. p.)
Glenn, P. J. (1980). Apologetics. A philosophic defense and explanation of the catholic religion (1a ed.). Tan books and publishers, inc.
Chicago-viite (17. p.)
Glenn, Paul J. Apologetics. A Philosophic Defense and Explanation of the Catholic Religion. 1a ed. Tan books and publishers, inc, 1980.
MLA-viite (9. p.)
Glenn, Paul J. Apologetics. A Philosophic Defense and Explanation of the Catholic Religion. 1a ed. Tan books and publishers, inc, 1980.
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