Cita APA (7a ed.)

Omar Khayyam, Graves, R., & Ali-Shah, O. (1972). Rubaiyyat of Omar Khayaam: : a new translation with critical commentaries by Robert Graves and Omar Ali-Shah. Penguin.

Cita Chicago Style (17a ed.)

Omar Khayyam, Robert Graves, y Omar Ali-Shah. Rubaiyyat of Omar Khayaam: : A New Translation with Critical Commentaries by Robert Graves and Omar Ali-Shah. Harmondsworth: Penguin, 1972.

Cita MLA (8a ed.)

Omar Khayyam, et al. Rubaiyyat of Omar Khayaam: : A New Translation with Critical Commentaries by Robert Graves and Omar Ali-Shah. Penguin, 1972.