American Bureau of Ethnology, 16th Annual Report (Washington).
Smith, W. R. Religion of the Semites, lecture v (new ed., London, 1894).
Erman, A. Handbook of Egyptian Religion, Index (Eng. tr., London, 1907).
Steindorff, G. Religion of the Ancient Egyptians (New York and London, 1905).
Jastrow, M., Jr. Religion of Babylonia and Assyria, pp. 662 f., 688 f. (Boston, 1898).
Garstang, J. Land of the Hittites, Index (London, 1910).
Hopkins, E. W. Mythological Aspects of Trees and Mountains in the Great Epic, Journal of the American Oriental Society (September, 1910); The Sacred Rivers of India (in Studies presented to C. H. Toy) (New York, 1912).
Gubernatis, A. de. Zoological Mythology (London, 1872); La mythologie des plantes (Paris, 1878-1882).
Fergusson, James. Tree- and Serpent-Worship (2d ed., London, 1873).
Crooke, W. Popular Religion and Folklore of Northern India (London, 1896).