Citazione Stile APA (7a Edizione)

Friis Johansen, K. (1991). A History of ancient philosophy: From the beginnings to. Routledge.

Citazione stile Chigago Style (17a edizione)

Friis Johansen, Karsten. A History of Ancient Philosophy: From the Beginnings to. London: Routledge, 1991.

Citatione MLA (9a ed.)

Friis Johansen, Karsten. A History of Ancient Philosophy: From the Beginnings to. Routledge, 1991.