Gaya APA

Powell, M, E. (2009). Papal infallibility: A protestant evaluation of an ecumeni- cal issue. . Michigan: Michigan Eerdsmans Publishing Company.

Gaya MLA

Powell, Mark, E.. "Papal infallibility: A protestant evaluation of an ecumeni- cal issue. ". Michigan: Michigan Eerdsmans Publishing Company, 2009. Buku.