Cita APA (7th ed.)

Cleve, F. M. (1973). The giants of pre-sophistic greek philosophy (3a. ed.). Martinus Nijhoff.

Cita Chicago (17th ed.)

Cleve, Felix M. The Giants of Pre-sophistic Greek Philosophy. 3a. ed. La Haya: Martinus Nijhoff, 1973.

Cita MLA (9th ed.)

Cleve, Felix M. The Giants of Pre-sophistic Greek Philosophy. 3a. ed. Martinus Nijhoff, 1973.