. "Al-Maqr\u012Bz\u012B's \"Book of contention and strife concerning the relations between the Ban\u016B Umayya and the Ban\u016B H\u0101shim\" / translated into English, with an introduction and commentary by Clifford Edmund Bosworth,... / Manchester : University of Manchester , [1980?]" . . "2"^^ . . "1980"^^ . . .