Cita APA (7a ed.)

Belloc, H., & Derrick, T. (1931). Nine nines: Or, Novenas from a Chinese litany of odd numbers. B. Blackwell.

Cita Chicago Style (17a ed.)

Belloc, Hilaire, y Thomas Derrick. Nine Nines: Or, Novenas from a Chinese Litany of Odd Numbers. Oxford: B. Blackwell, 1931.

Cita MLA (8a ed.)

Belloc, Hilaire, y Thomas Derrick. Nine Nines: Or, Novenas from a Chinese Litany of Odd Numbers. B. Blackwell, 1931.