B.H. Baden-Powell, The Indian Village Community, pp. 40-45, 111, 116. London, 1896.

H.R. Mill, International Geography, pp. 394-395. New York, 1902.

Gottfried Merzbacher, Aus den Hochregionen des Kaukasus, pp. 73-78. Leipzig, 1901.

W.Z. Ripley, The Races of Europe, p. 438. New York, 1899.

Ibid., Maps pp. 143, 147, text p. 148.

E. Huntington, The Pulse of Asia, pp. 106-109. Boston, 1907.

W.Z. Ripley, The Races of Europe, pp. 249-253. New York, 1899.

Ibid., p. 282 and cartogram, p. 284.

Sir Thomas Holdich, India, p. 201. London, 1905. Imperial Gazetteer of India, Vol. I, p. 295. Oxford, 1907.

Census of India, 1901, Ethnographic Appendices, Vol. I, p. 60, by H. H. Risley, Calcutta, 1903. C. A. Sherring, Western Tibet and the British Borderland, pp. 341-353. London, 1906.