[Letter to Abraham ben Nathan, "the Seventh"] :

MLA

Cairo Genizah Collection (University of Pennsylvania. Center for Advanced Judaic Studies. Library). [Letter to Abraham ben Nathan, "the Seventh"] :. [al-Maḥalla], [publisher not identified], [late 11th century-early 12th century?]

APA

Cairo Genizah Collection (University of Pennsylvania. Center for Advanced Judaic Studies. Library). (1000). [Letter to Abraham ben Nathan, "the Seventh"] :. [al-Maḥalla], [publisher not identified].

Chicago

Cairo Genizah Collection (University of Pennsylvania. Center for Advanced Judaic Studies. Library). [Letter to Abraham ben Nathan, "the Seventh"] :. [al-Maḥalla], [publisher not identified], [late 11th century-early 12th century?]