Cita APA (7th ed.)

Runciman, S. (1964). A history of the Crusades. Harper.

Cita Chicago (17th ed.)

Runciman, Steven. A History of the Crusades. New York: Harper, 1964.

Cita MLA (8th ed.)

Runciman, Steven. A History of the Crusades. Harper, 1964.