Paul Gwynne (23. 12. 2013). Buddha, Jesus and Muhammad: A Comparative Study. John Wiley & Sons. ISBN9781118465493. „According to Sunni Islam, Khadija bore Muhammad four daughters (Zaynab, Ruqayya, Umm Kulthum and Fatima) and two sons ('Abdallah and Qasim).”
„Sawda bint Zama”. Oxford Islamic Studies Online. From The Oxford Dictionary of Islam, ed. John Esposito, 2003. Архивирано из оригинала 10. 09. 2018. г. Приступљено 20. 4. 2019.
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Muhammad al-Tijani in his The Shi'a: The Real Followers of the Sunnah on Al-Islam.org note 274Архивирано 2006-05-04 на сајту Wayback Machine
„Sawda bint Zama”. Oxford Islamic Studies Online. From The Oxford Dictionary of Islam, ed. John Esposito, 2003. Архивирано из оригинала 10. 09. 2018. г. Приступљено 20. 4. 2019.