Cita APA (7a ed.)

Guthrie, W. K. C. (1971). The sophists. University Press.

Cita Chicago Style (17a ed.)

Guthrie, William Keith Chambers. The Sophists. Cambridge [etc.]: University Press, 1971.

Cita MLA (9a ed.)

Guthrie, William Keith Chambers. The Sophists. University Press, 1971.