Ref:ENGELHARDT Die Ernst Schäfer Tibetexpedition 1938 1 666ZXRWJ
De Commission Historique
Engelhardt, Isrun. "Die Ernst Schäfer Tibetexpedition 1938-1939." {{{PublicationTitle}}}, 2009. https://info-buddhismus.de/Ernst-Schaefer-Tibetexpedition-Engelhardt.html, Page consultée le 2017-10-23.
