APA (7th ed.) Citation

McNeill, J. T., & Gamer, H. M. (1965). Medieval handbooks of penance. Octagon Books.

Chicago Style (17th ed.) Citation

McNeill, John T., and Helena M. Gamer. Medieval Handbooks of Penance. [Place of publication not identified]: Octagon Books, 1965.

MLA (9th ed.) Citation

McNeill, John T., and Helena M. Gamer. Medieval Handbooks of Penance. Octagon Books, 1965.