Cita APA (7a ed.)

Guhl, E., & Koner, W. (1989). The Greeks and Romans. Bracken.

Cita Chicago Style (17a ed.)

Guhl, E., y W. Koner. The Greeks and Romans. London: Bracken, 1989.

Cita MLA (9a ed.)

Guhl, E., y W. Koner. The Greeks and Romans. Bracken, 1989.