Cite

Horologium sapientiae, etc.

MLA

Seuse, Heinrich, 1295-1366. Horologium sapientiae, etc.. [between 1450 and 1500]. https://collections.library.yale.edu/catalog/2013549.

APA, 6th edition

Seuse, Heinrich, 1295-1366. ([between 1450 and 1500])[Horologium sapientiae, etc.]. https://collections.library.yale.edu/catalog/2013549.