Atwood, Christopher P. (2023). "The Empire of the Great Khan: The Yuan Ulus, 1260–1368". In Biran, Michal; Kim, Hodong (eds.). The Cambridge History of the Mongol Empire. Cambridge University Press. pp. 107–180. doi:10.1017/9781316337424. ISBN9781316337424.
Atwood, Christopher P. (2023). "The Empire of the Great Khan: The Yuan Ulus, 1260–1368". In Biran, Michal; Kim, Hodong (eds.). The Cambridge History of the Mongol Empire. Cambridge University Press. pp. 107–180. doi:10.1017/9781316337424. ISBN9781316337424.