Franklin

MLA

Surles, Robert Leo. Medieval Numerology : a Casebook. New York: Garland Pub., 1993.

APA

Surles, R. Leo. (1993). Medieval numerology : a casebook. New York: Garland Pub.

Chicago

Surles, Robert Leo, Medieval Numerology: A Casebook. New York: Garland Pub., 1993.