Haw, Stephen G. (2013). "The deaths of two Khaghans: a comparison of events in 1242 and 1260". Bulletin of the School of Oriental and African Studies, University of London. 76 (3): 361–371. doi:10.1017/S0041977X13000475. JSTOR24692275.
Haw, Stephen G. (2013). "The deaths of two Khaghans: a comparison of events in 1242 and 1260". Bulletin of the School of Oriental and African Studies, University of London. 76 (3): 361–371. doi:10.1017/S0041977X13000475. JSTOR24692275.