APA (7th ed.) Citation

Witelo & Unguru, S. (1991). Witelonis Perspectivae liber secundus et liber tertius =: Books II and III of Witelo's Perspectiva. Ossolineum.

Chicago Style (17th ed.) Citation

Witelo and Sabetai Unguru. Witelonis Perspectivae Liber Secundus Et Liber Tertius =: Books II and III of Witelo's Perspectiva. Wrocław: Ossolineum, 1991.

MLA (9th ed.) Citation

Witelo and Sabetai Unguru. Witelonis Perspectivae Liber Secundus Et Liber Tertius =: Books II and III of Witelo's Perspectiva. Ossolineum, 1991.

Warning: These citations may not always be 100% accurate.