@book{Serjeant1987,
author="Robert B. Serjeant",
title="Early Islamic and mediaeval trade and commerce in Yemen",
year="1987",
booktitle="Yemen: 3000 Years of Art and Civilisation in Arabia Felix",
editor="Werner Daum",
publisher="Pinguin-Verlag",
address="Innsbruck",
pages="163-66",
keyword0="Commerce",
type="chapter"
}