Cita APA (7th ed.)

Barnes, J. (1979). The presocratic philosophers. Routledge & Kegan Paul.

Cita Chicago (17th ed.)

Barnes, Jonathan. The Presocratic Philosophers. Londres: Routledge & Kegan Paul, 1979.

Cita MLA (9th ed.)

Barnes, Jonathan. The Presocratic Philosophers. Routledge & Kegan Paul, 1979.