MLA

Burlaeus, Gualterus, 1275-1345?, author. Preclarissimi viri Gualterii Burlei Anglici sacre pagine professoris excellentissimi sup[er] artem vetere[m] Porphyrii & Aristotelis expositio siue scriptum feliciter incipit. Anno. M. cccc. lxxxi. Quarto Idus dece[m]bris [10 December 1481]. https://collections.library.yale.edu/catalog/9998774.

APA, 6th edition

Burlaeus, Gualterus, 1275-1345?, author. (Anno. M. cccc. lxxxi. Quarto Idus dece[m]bris [10 December 1481])[Preclarissimi viri Gualterii Burlei Anglici sacre pagine professoris excellentissimi sup[er] artem vetere[m] Porphyrii & Aristotelis expositio siue scriptum feliciter incipit]. https://collections.library.yale.edu/catalog/9998774.