MLA

Ibn Qutaybah, ʻAbd Allāh ibn Muslim, 828-889?, author, ابن قتيبة، عبد الله بن مسلم، 828-889؟ author. Kitāb Adab al-kātib : manuscript. 19th century.. https://collections.library.yale.edu/catalog/32472574.

APA, 6th edition

Ibn Qutaybah, ʻAbd Allāh ibn Muslim, 828-889?, author, & ابن قتيبة، عبد الله بن مسلم، 828-889؟ author. (19th century.)[Kitāb Adab al-kātib : manuscript]. https://collections.library.yale.edu/catalog/32472574.