MLA

Leonardus, de Utino, active 15th century, author. Sermones floridi de tempore. July 15, 1496]. https://collections.library.yale.edu/catalog/16189385.

APA, 6th edition

Leonardus, de Utino, active 15th century, author. (July 15, 1496])[Sermones floridi de tempore]. https://collections.library.yale.edu/catalog/16189385.