Cita APA (7a ed.)

Omar Khayyám, Avery, P., & Heath-Stubbs, J. F. A. (1979). The Ruba'iyat of Omar Khayyam. : Penguin.

Cita Chicago Style (17a ed.)

Omar Khayyám, Peter Avery, y John Francis Alexander Heath-Stubbs. The Ruba'iyat of Omar Khayyam. Harmondsworth: : Penguin, 1979.

Cita MLA (8a ed.)

Omar Khayyám, et al. The Ruba'iyat of Omar Khayyam. : Penguin, 1979.