Columbia subject headings:
Harvard subject headings:
Arabic letters
Muʻāwiyah ibn Abī Sufyān, Caliph, -680
Umayyad dynasty.
ʻAlī ibn Abī Ṭālib, Caliph, approximately 600-661
Princeton subject headings:
Arabic letters.
Muʻāwiyah ibn Abī Sufyān, Caliph, -680.
Umayyad dynasty.
ʻAlī ibn Abī Ṭālib, Caliph, approximately 600-661.