@book{Halliday1987,
author="Fred Halliday",
title="The Yemens in the twentieth century",
year="1987",
booktitle="Yemen: 3000 Years of Art and Civilisation in Arabia Felix",
editor="Werner Daum",
publisher="Pinguin-Verlag",
address="Innsbruck",
pages="445-67",
keyword0="Colonization",
keyword1="History",
keyword2="Prerevolution",
keyword3="South Yemen",
type="chapter"
}