'Umar Hayyam. (1907). Estances. Bibl. P. de L'avenç.
Chicago Style (17th ed.) Citation'Umar Hayyam. Estances. Barcelona: Bibl. P. de L'avenç, 1907.
MLA (9th ed.) Citation'Umar Hayyam. Estances. Bibl. P. de L'avenç, 1907.
Warning: These citations may not always be 100% accurate.
