Wilkinson, Endymion Porter (2000). Chinese History: A Manual. Volume 52 of Harvard Yenching Institute Cambridge, Mass: Harvard-Yenching Institute monograph series (Issue 52 of Harvard-Yenching Institute monograph series) (illustrated, revised edición). Harvard Univ Asia Center. p. 864. ISBN0674002490. ISSN0073-084X. Consultado el 24 de abril de 2014.
Wilkinson, Endymion Porter (2000). Chinese History: A Manual. Volume 52 of Harvard Yenching Institute Cambridge, Mass: Harvard-Yenching Institute monograph series (Issue 52 of Harvard-Yenching Institute monograph series) (illustrated, revised edición). Harvard Univ Asia Center. p. 864. ISBN0674002490. ISSN0073-084X. Consultado el 24 de abril de 2014.
jstor.org
pp. 123-125 Howorth, H. H.. 1881. “The Northern Frontagers of China. Part V. The Khitai or Khitans”. Journal of the Royal Asiatic Society of Great Britain and Ireland 13 (2). Royal Asiatic Society of Great Britain and Ireland: 121–82. http://www.jstor.org/stable/25196875.