APA (7th ed.) Zitazioa
ebrary, Inc, Ophuijsen, J. M. v., Raalte, M. v., & Stork, P. (2013). Protagoras of Abdera: The man, his measure. Brill.
Chicago Style (17th ed.) Zitazioa
ebrary, Inc, J. M. van Ophuijsen, Marlein van Raalte, eta Peter Stork. Protagoras of Abdera: The Man, His Measure. Leiden, Netherlands ; Boston, Mass.: Brill, 2013.
MLA (9th ed.) Zitazioa
ebrary, Inc, et al. Protagoras of Abdera: The Man, His Measure. Brill, 2013.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.