Uradyn Erden Bulag, Dilemmas The Mongols at China's edge : history and the politics of national unity, Rowman & Littlefield, , 273 p. (ISBN0-7425-1144-8, lire en ligne), p. 43
(en) Jonathan Neaman Lipman, Familiar strangers : a history of Muslims in Northwest China, Seattle, University of Washington Press, , 266 p. (ISBN0-295-97644-6, lire en ligne), p. 170
(en) Jonathan Neaman Lipman, Familiar strangers : a history of Muslims in Northwest China, Seattle, University of Washington Press, , 266 p. (ISBN0-295-97644-6, lire en ligne), p. 146
(en) Jonathan Neaman Lipman, Familiar strangers : a history of Muslims in Northwest China, Seattle, University of Washington Press, , 266 p. (ISBN0-295-97644-6, lire en ligne), p. 168
University of Illinois at Urbana-Champaign. Center for Asian Studies, Chinese Republican studies newsletter, Volumes 5-7, (lire en ligne), p. 35
Frederick Roelker Wulsin, Mary Ellen Alonso, Joseph Fletcher, Peabody Museum of Archaeology and Ethnology, National Geographic Society (U.S.), Peabody Museum of Salem, Pacific Asia Museum, China's inner Asian frontier : photographs of the Wulsin expedition to northwest China in 1923 : from the archives of the Peabody Museum, Harvard University, and the National Geographic Society, The Museum : distributed by Harvard University Press, (ISBN0-674-11968-1, lire en ligne), p. 43
Jonathan Neaman Lipman, Familiar strangers : a history of Muslims in Northwest China, Hong Kong University Press, (ISBN962-209-468-6, lire en ligne), p. 258 (the main index entry for "Ma family warlords")
