MLA

Younge, Richard., and creator. The Hearts-Index, or Self Knowledg [Sic]... Printed by J. Hayes, and are to be sold by Mrs. Crips in Popes-head-Alley ..., 1665. https://collections.library.yale.edu/catalog/2110952.

APA, 6th edition

Younge, R., & creator. (1665). The Hearts-index, or self knowledg [sic]... [Tracts]. Printed by J. Hayes, and are to be sold by Mrs. Crips in Popes-head-Alley ... https://collections.library.yale.edu/catalog/2110952.