Schurmann, H. (1986). Principles of Christian Morality (ed.). Ignatius Press.
Tohutoru Kātū Chicago (17th ed.)Schurmann, Heinz. Principles of Christian Morality. ed. San Francisco: Ignatius Press, 1986.
Tohutoro MLA (9th ed.)Schurmann, Heinz. Principles of Christian Morality. ed. Ignatius Press, 1986.
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