Cammann, Schuyler. 1951. Trade Through the Himalyas, The Early British Attempts to Open Tibet. Princeton: Princeton University Press.
@book{cammann1951, address = {Princeton}, author = {Cammann, Schuyler}, key = {Cammann (1951)}, publisher = {Princeton University Press}, title = {Trade Through the Himalyas, The Early British Attempts to Open Tibet}, year = {1951} }