Cita APA (7a ed.)

Guerdan, R., Diehl, C., & Hartley, D. L. .. (1956). Byzantium its triumphs and tragedy. George Allen & Unwin.

Cita Chicago Style (17a ed.)

Guerdan, René, Charles Diehl, y D. L .B Hartley. Byzantium Its Triumphs and Tragedy. London: George Allen & Unwin, 1956.

Cita MLA (9a ed.)

Guerdan, René, et al. Byzantium Its Triumphs and Tragedy. George Allen & Unwin, 1956.