Columbia subject headings:
Arabic language--Grammar.
Farrāʼ, Yaḥyá ibn Ziyād, 761 or 762-822 or 823.
Sibawayh, ʻAmr ibn ʻUthmān, -approximately 793.
Harvard subject headings:
Princeton subject headings:
Arabic language--Grammar.
Sībawayh, ʻAmr ibn ʻUthmān, active 8th century--Criticism and interpretation.