Upinder Singh, A History of Ancient and Early Medieval India : From the Stone Age to the 12th century, Pearson Education, , 708 p. (ISBN978-81-317-1677-9, lire en ligne), p. 332
(en) Ana Ruiz, Vibrant Andalusia : The Spice of Life in Southern Spain, Algora Publishing, , 216 p. (ISBN978-0-87586-541-6, lire en ligne).
Gwyn Campbell, Suzanne Miers et Joseph C. Miller, Children in Slavery through the Ages, Ohio University Press, , 241 p. (ISBN978-0-8214-4339-2, lire en ligne), p. 136–
Eurasian Influences on Yuan China, Institute of Southeast Asian Studies, , reprint éd. (ISBN9814459720, lire en ligne), p. 200
(en) Conrad Schirokauer, Miranda Brown, David Lurie et Suzanne Gay, A Brief History of Chinese and Japanese Civilizations, Cengage Learning, (ISBN978-1-133-70924-4 et 1-133-70924-9, lire en ligne), p. 247–
Trude Jacobsen, Divergent perspectives on the Cambodian 'harem' in the reigns of Norodom (1863-1904) and Sisowath (1904-1927), Clayton, Vic. : Monash University Press, , 20 p. (ISBN9781876924720, lire en ligne), p. 1