Mansvelt Beck 1986, pp. 374–375. Mansvelt Beck, B. J. (1986), Twitchett, Denis; Loewe, Michael (eds.), "The fall of Han", The Cambridge History of China: Volume 1: The Ch'in and Han Empires, 221 BC–AD 220, The Cambridge History of China, vol. 1, Cambridge: Cambridge University Press, pp. 317–376, doi:10.1017/chol9780521243278.007, ISBN978-0-521-24327-8, retrieved 17 November 2020
Mansvelt Beck 1986, pp. 374–375. Mansvelt Beck, B. J. (1986), Twitchett, Denis; Loewe, Michael (eds.), "The fall of Han", The Cambridge History of China: Volume 1: The Ch'in and Han Empires, 221 BC–AD 220, The Cambridge History of China, vol. 1, Cambridge: Cambridge University Press, pp. 317–376, doi:10.1017/chol9780521243278.007, ISBN978-0-521-24327-8, retrieved 17 November 2020