Ram Rahul, Central Asia: an outline history, New Delhi, Concept Publishing Company, 1997, p. 42 "From then [1720] until the fall of the Manchu dynasty in 1912, the Manchu Ch'ing government stationed an Amban, a Manchu mandarin, and a military escort in Tibet."
Testimony by Kent M. Wiedemann, Deputy Assistant Secretary of State for East Asian and Pacific Affairs before Subcommitte on East Asian and Pacific Affairs, Senate Foreign Relations Committee (online versionArkiveret 13. januar 2012 hos Wayback Machine), 1995
Testimony by Kent M. Wiedemann, Deputy Assistant Secretary of State for East Asian and Pacific Affairs before Subcommitte on East Asian and Pacific Affairs, Senate Foreign Relations Committee (online versionArkiveret 13. januar 2012 hos Wayback Machine), 1995