Expositio in Isagogen Porphyrii cum quaestionibus Iohannis Duns Scoti
MLA
Gualterus, de Wervia. Expositio in Isagogen Porphyrii Cum Quaestionibus Iohannis Duns Scoti. 0AD. https://collections.library.yale.edu/catalog/33077531.
APA, 6th edition
Gualterus, de W. (0 C.E.). Expositio in Isagogen Porphyrii cum quaestionibus Iohannis Duns Scoti [Early works to 1800, Manuscripts, Medieval Germany 15th century, Manuscripts, Medieval Germany 16th century, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/33077531.