@book{Dresch1990,
author="Paul K. Dresch",
title="Imams and tribes: The writing and acting of history in Upper Yemen",
year="1990",
booktitle="Tribes and State Formation in the Middle East",
editor="Philip S. Khoury",
publisher="University of California Press",
address="Berkeley",
pages="252-87",
keyword0="Tribes",
type="chapter"
}