Cita APA (7a ed.)

Turtledove, H., & Asimov, I. (1988). Agent of Byzantium. Worldwide.

Cita Chicago Style (17a ed.)

Turtledove, Harry, y Isaac Asimov. Agent of Byzantium. Toronto: Worldwide, 1988.

Cita MLA (9a ed.)

Turtledove, Harry, y Isaac Asimov. Agent of Byzantium. Worldwide, 1988.