APA

(1992). The Middle AGES, Volume 1. Sources of Medieval History. New York: [s.n.].

Chicago

1992. The Middle AGES, Volume 1. Sources of Medieval History. New York: [s.n.].

Harvard

(1992). The Middle AGES, Volume 1. Sources of Medieval History. New York: [s.n.].

MLA

The Middle AGES, Volume 1. Sources of Medieval History. New York: [s.n.]. 1992.