Biographies
Krishna: A Sourcebook edited by Edwin F. Bryant
Krishna, the Teacher by S. Radhakrishnan
Traditional Biographical Sources
As with many great teachers, Krishna committed nothing of his own to writing. However, his core teachings are embodied in the Mahabharata (Bhagavadgita, Anugita, etc.).
Selected Translations of Works related to Krishna
Selected Articles related to Krishna
See also: Vedic and Pre-Historic India.