B.H. Baden-Powell, The Indian Village Community, pp. 57, 58, 61. London, 1896.

E.F. Knight, Where Three Empires Meet, pp. 148, 151, 154, 163, 203, 238 et passim. London, 1897.

Ibid., 70-73.

F.H. Nichols, Through Hidden Shensi, p. 52. New York, 1902.

Isabella Bird Bishop, The Yangtze Valley and Beyond, Vol. I, pp. 163, 176; Vol. II, pp. 126, 147. New York and London, 1900.

Boyd Winchester, The Swiss Republic, p. 307. Philadelphia, 1891.

Wilhelm Roscher, National-oekonomik des Ackerbaues, p. 656, Note 1. Stuttgart, 1888.

Norway, Official Publication, p. 307. Christiania, 1900.

Roscher, National-oekonomik des Ackerbaues, p. 656, Note 4. Stuttgart, 1888.

Norway, Official Publication, p. 325. Christiania, 1900.