. "Opera omnia / Vol. 2, Sect. 2 Protagoras" . . . . . . "Opera omnia. 2,2, Protagoras" . "Platonis Opera omnia / Vol. 2, sect. 2, Platonis Protagoras / recognovit et cum Godofredi Stallbaumi suisque annotationibus ed. J.S. Kroschel" . . . . . . . . . .