ebrary, Inc, & Velkley, R. L. (2007). Freedom and the human person. Catholic University of America Press.
Chicago Style (17th ed.) Citationebrary, Inc, and Richard L. Velkley. Freedom and the Human Person. Washington, D.C.: Catholic University of America Press, 2007.
MLA引文ebrary, Inc, and Richard L. Velkley. Freedom and the Human Person. Catholic University of America Press, 2007.
警告:這些引文格式不一定是100%准確.