MLA

Athīr al-Dīn al-Abharī, al-Mufaḍḍal ibn ʻUmar, -1265. Kitāb al-Īsāghūjī. -- 1669 or 70?. https://collections.library.yale.edu/catalog/2005464.

APA, 6th edition

Athīr al-Dīn al-Abharī, al-Mufaḍḍal ibn ʻUmar, -1265. [Kitāb al-Īsāghūjī. -- 1669 or 70?]. https://collections.library.yale.edu/catalog/2005464.