Pythagoreanism

Guthrie, W. K. C. A History of Greek Philosophy. Vol. 1: The Earlier Presocratics and the Pythagoreans. Cambridge, U.K.: Cambridge University Press, 1962.

Guthrie, Kenneth S., and David R. Fideler, eds. The Pythagorean Sourcebook and Library: An Anthology of Ancient Writings which Relate to Pythagoras and Pythagorean Philosophy. Grand Rapids, Mich.: Phanes Press, 1987.

Navia, Luis E. Pythagoras: An Annotated Bibliography. New York: Garland, 1990.

Vogel, Cornelia J. de. Pythagoras and Early Pythagoreanism: An Interpretation of Neglected Evidence on the Philosopher Pythagoras. Assen, Netherlands: Van Gorcum, 1966.