MLA

Vincent Ferrer, Saint, approximately 1350-1419. Sermones. [between 1450 and 1500]. https://collections.library.yale.edu/catalog/10269801.

APA, 6th edition

Vincent Ferrer, Saint, approximately 1350-1419. ([between 1450 and 1500])[Sermones]. https://collections.library.yale.edu/catalog/10269801.