Cita APA (7a ed.)

Kerferd, G. B. (1981). The sophistic movement (1st published, repr.). University Press.

Cita Chicago Style (17a ed.)

Kerferd, George Briscoe. The Sophistic Movement. 1st published, repr. Cambridge [etc.]: University Press, 1981.

Cita MLA (9a ed.)

Kerferd, George Briscoe. The Sophistic Movement. 1st published, repr. University Press, 1981.