Cita APA (7th ed.)
Peterson, J. (2013). Introduction to Thomistic philosophy. University Press of America.
Cita Chicago (17th ed.)
Peterson, John. Introduction to Thomistic Philosophy. Lanham, Md.: University Press of America, 2013.
Cita MLA (9th ed.)
Peterson, John. Introduction to Thomistic Philosophy. University Press of America, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.