Cita APA (7th ed.)

Otto Bishop of Freising d. 1158, Evans, A. P., Knapp, C., & Mierow, C. C. b. (1966). The two cities: A chronicle of universal history to the year 1146 A.D. Octagon Books.

Cita Chicago (17th ed.)

Otto Bishop of Freising d. 1158, Austin Patterson Evans, Charles Knapp, i Charles Christopher b. Mierow. The Two Cities: A Chronicle of Universal History to the Year 1146 A.D. New York: Octagon Books, 1966.

Cita MLA (9th ed.)

Otto Bishop of Freising d. 1158, et al. The Two Cities: A Chronicle of Universal History to the Year 1146 A.D. Octagon Books, 1966.