MLA

Hertsens, Isabella. Thresor Des Ames Devotes. Isabella Hertsens, 0AD. https://collections.library.yale.edu/catalog/2107187.

APA, 6th edition

Hertsens, I. (0 C.E.). Thresor des ames devotes [Engravings, Epigrams, Illustrations]. Isabella Hertsens. https://collections.library.yale.edu/catalog/2107187.