Cita APA (7a ed.)

Gide, A., & Bussy, D. (1965). Strait is the gate ; and The Vatican cellars. Penguin.

Cita Chicago Style (17a ed.)

Gide, André, y Dorothy Bussy. Strait Is the Gate ; and The Vatican Cellars. Harmondsworth [etc.]: Penguin, 1965.

Cita MLA (9a ed.)

Gide, André, y Dorothy Bussy. Strait Is the Gate ; and The Vatican Cellars. Penguin, 1965.