APA

Panzer J. S., Joel S. Panzer, .The popes and slavery. New York: .

Chicago

Panzer Joel S, Joel S. Panzer, .The popes and slavery. New York: .

Harvard

Panzer J. S., Joel S. Panzer, .The popes and slavery. New York: .

MLA

Panzer Joel S, Joel S. Panzer, .New York: . .