Davenport, Arthur (1877), Report upon the trading capabilities of the country traversed by the Yunnan Mission, Harrison and Sons, pp. 10–11 E.g., Moll, Herman.
Davenport, Arthur (1877), Report upon the trading capabilities of the country traversed by the Yunnan Mission, Harrison and Sons, pp. 10–11 نسخة محفوظة 02 أبريل 2015 على موقع واي باك مشين.