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}
}