Richardson, H. E. (1962). Tibet and its history. London: Oxford university Press.
Dyfyniad Arddull ChicagoRichardson, H. E. Tibet and Its History. London: Oxford university Press, 1962.
Dyfyniad MLARichardson, H. E. Tibet and Its History. London: Oxford university Press, 1962.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.