@book{Serjeant1989,
author="Robert B. Serjeant",
title="Yafi, Zaydis, Al Bu Bakr b. Salim and others: Tribes and Sayyids",
year="1989",
booktitle="On Both Sides of Al-Mandab: Ethiopia, South-Arabic and Islamic Studies Presented to Oscar Löfgren on his ninetieth birthday 13 May 1988",
publisher="Swedish Research Institute in Istanbul",
edition="Transactions Vol. 2",
address="Istanbul",
pages="83-105",
keyword0="Aramawt",
keyword1="Customary",
keyword2="Hijrah",
keyword3="History",
keyword4="Law",
keyword5="Tribes",
keyword6="Yafi",
type="chapter"
}