Cita APA (7th ed.)

Kerferd, G. B. (1981). The sophistic movement. Cambridge University Press.

Cita Chicago (17th ed.)

Kerferd, George Briscoe. The Sophistic Movement. Cambridge, Reino Unido: Cambridge University Press, 1981.

Cita MLA (9th ed.)

Kerferd, George Briscoe. The Sophistic Movement. Cambridge University Press, 1981.