Wendy Doniger (O'Flaherty), trans.  The Rig Veda: An Anthology.  Harmondsworth: Penguin, 1981.

Franklin Edgerton.  The Beginnings of Indian Philosophy.  Cambridge: Harvard University Press, 1965.

Franklin Edgerton, trans. The Bhagavad Gita. 2 volumes. Harvard Oriental Series, Volumes 38 and 39.  Cambridge: Harvard University Press, 1944.  See especially "Essays in Interpretation."

Ainslie T. Embree, ed.  Sources of Indian Tradition.  Volume One.  Second Edition. New York: Columbia University Press, 1988, see especially pp. 3-39.

Gerald J. Larson.  India's Agony Over Religion.  Pp. 57-65.

Stanley Wolpert.  A New History of India.  Pp. 24-36.

World Wide Web:  see "Harappa" and "Manas"