MLA

Augustine, of Hippo, Saint, 354-430. Confessiones. [between 1125 and 1150]. https://collections.library.yale.edu/catalog/10269768.

APA, 6th edition

Augustine, of Hippo, Saint, 354-430. ([between 1125 and 1150])[Confessiones]. https://collections.library.yale.edu/catalog/10269768.