Columbia subject headings:
Arabic language--Grammar--History.
Sībawayh, ʻAmr ibn ʻUthmān, active 8th century.
Harvard subject headings:
Arabic language--Grammar--History.
Sībawayh, ʻAmr ibn ʻUthmān, active 8th century. Kitāb.
Princeton subject headings:
Arabic language--Grammar--History.
Sībawayh, ʻAmr ibn ʻUthmān, active 8th century. Kitāb.