The Rubaiyyat of Omar Khayaam;

MLA

Omar Khayyam, Omar Ali-Shah, and Robert Graves. The Rubaiyyat of Omar Khayaam. London: Cox & Wyman, 1967.

APA

Omar Khayyam, O. Khayyam, Ali-Shah, O., & Graves, R. (1967). The Rubaiyyat of Omar Khayaam. London: Cox & Wyman.

Chicago

Omar Khayyam. The Rubaiyyat of Omar Khayaam;. Edited by Omar Ali-Shah and Robert Graves. London: Cox & Wyman, 1967.