APA-čujuhus (7. p.)
ebrary, Inc, & Velkley, R. L. (2007). Freedom and the human person. Catholic University of America Press.
Chicago-čujuhus (17. p.)
ebrary, Inc, juo Richard L. Velkley. Freedom and the Human Person. Washington, D.C.: Catholic University of America Press, 2007.
MLA-čujuhus (9. p.)
ebrary, Inc, juo Richard L. Velkley. Freedom and the Human Person. Catholic University of America Press, 2007.
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