Cita APA (7a ed.)

Courthion, P., & Emmons, J. (1957). Paris in the past. Skira.

Cita Chicago Style (17a ed.)

Courthion, Pierre, y James Emmons. Paris in the Past. Genève [etc.]: Skira, 1957.

Cita MLA (9a ed.)

Courthion, Pierre, y James Emmons. Paris in the Past. Skira, 1957.