Stimulus amoris, etc
MLA
Jacobus, Mediolanensis, active 13th century. Stimulus amoris, etc. [between 1400 and 1450]. https://collections.library.yale.edu/catalog/15235793.
APA, 6th edition
Jacobus, Mediolanensis, active 13th century. ([between 1400 and 1450])[Stimulus amoris, etc]. https://collections.library.yale.edu/catalog/15235793.