Cita APA (7a ed.)

Watkins, O. D. (1961). A history of penance: Being a study of the authorities. Burt Franklin.

Cita Chicago Style (17a ed.)

Watkins, Oscar D. A History of Penance: Being a Study of the Authorities. New York: Burt Franklin, 1961.

Cita MLA (9a ed.)

Watkins, Oscar D. A History of Penance: Being a Study of the Authorities. Burt Franklin, 1961.