Cita APA (7th ed.)

Allen, R. E. (1966). Greek philosophy: Thales to Aristotle. The Free Press.

Cita Chicago (17th ed.)

Allen, Reginald E. Greek Philosophy: Thales to Aristotle. New York: The Free Press, 1966.

Cita MLA (9th ed.)

Allen, Reginald E. Greek Philosophy: Thales to Aristotle. The Free Press, 1966.