Cita APA (7a ed.)

Apollinaire, G., & Billy, A. (1956). Poèmes. Gallimard.

Cita Chicago Style (17a ed.)

Apollinaire, Guillaume, y André Billy. Poèmes. Paris: Gallimard, 1956.

Cita MLA (9a ed.)

Apollinaire, Guillaume, y André Billy. Poèmes. Gallimard, 1956.