Branner (1999). Branner, David Prager, The Classification of Longyan(PDF), Simmons, Richard VanNess (编), Issues in Chinese Dialect Description and Classification, Journal of Chinese Linguistics monograph series 15, 1999 [2015-04-05], (原始内容(PDF)存档于2015-01-28).:36–83
Branner (1999). Branner, David Prager, The Classification of Longyan(PDF), Simmons, Richard VanNess (编), Issues in Chinese Dialect Description and Classification, Journal of Chinese Linguistics monograph series 15, 1999 [2015-04-05], (原始内容(PDF)存档于2015-01-28).:36–83