MLA

Guglielmo, da Saliceto, approximately 1210-1276 or 1277. Wilhelmi Placentini medici de Saliceto summa conservationis et curationis -- item Chirurgia. 1473.. https://collections.library.yale.edu/catalog/16960331.

APA, 6th edition

Guglielmo, da Saliceto, approximately 1210-1276 or 1277. (1473.)[Wilhelmi Placentini medici de Saliceto summa conservationis et curationis -- item Chirurgia]. https://collections.library.yale.edu/catalog/16960331.