"Hai ben Sherira". Encyclopædia Britannica. Encyclopædia Britannica, inc. March 16, 2018. Diarsipkan dari versi asli tanggal 2022-09-27. Diakses tanggal 21 April 2018. Hai ben Sherira, (born 939—died March 23, 1038)
"Hai Gaon". Oxford Reference. 2011-01-01. Diarsipkan dari versi asli tanggal 2021-11-27. Diakses tanggal 21 April 2018.
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"Hai ben Sherira". Encyclopædia Britannica. Encyclopædia Britannica, inc. March 16, 2018. Diarsipkan dari versi asli tanggal 2022-09-27. Diakses tanggal 21 April 2018. Hai ben Sherira, (born 939—died March 23, 1038)