(3QShe OGQ GdNdGaI (B/s - (3UGHi, CHh GdMSjf gdGd Hf GdeMSfs; Awwad, Mikha'il (Baghdad : Matba'at al-'Ani, 1964)
Added t.p. in English
Bibliography: page 172-188
Keywords: Diplomatic etiquette -- Baghdad; Abbasids