Topica ... [etc.].

MLA

Cicero, Marcus Tullius., et al. Topica ... [etc.]. [Italy], [between 1475 and 1499]

APA

Cicero, M., Boethius, Lessi, P. & Michelassi. (1475). Topica ... [etc.]. [Italy].

Chicago

Cicero, Marcus Tullius., Boethius, P. Lessi and Michelassi. Topica ... [etc.]. [Italy], [between 1475 and 1499]