APA

American Catholic Philosophical Association, Voorhies V. & McLean G. F. (1967). The nature of philosophical inquiry. Washington (D.C.): Catholic University of America.

Chicago

American Catholic Philosophical Association, Voorhies Valerie and McLean George F. 1967. The nature of philosophical inquiry. Washington (D.C.): Catholic University of America.

Harvard

American Catholic Philosophical Association, Voorhies V. and McLean G. F. (1967). The nature of philosophical inquiry. Washington (D.C.): Catholic University of America.

MLA

American Catholic Philosophical Association, Voorhies Valerie and McLean George F. The nature of philosophical inquiry. Washington (D.C.): Catholic University of America. 1967.