Gaya APA

Biel, G. (1968). 'Defensorium obedientiae apostolicae', at alia documenta. Ed. & transl. by Heiko A. Oberman, Daniel E. Zerfoss, & William J. Courtenay. . Cambridge: MassHarvard UP.

Gaya MLA

Biel, Gabriel. "'Defensorium obedientiae apostolicae', at alia documenta. Ed. & transl. by Heiko A. Oberman, Daniel E. Zerfoss, & William J. Courtenay. ". Cambridge: MassHarvard UP, 1968. Buku.