@article{Birks1981,
author="John S. Birks and Clive A. Sinclair and James A. Socknat",
title="Aspects of labour migration from North Yemen",
year="1981",
journal="Middle Eastern Studies",
volume="17",
number="1",
pages="49-63",
keyword0="Migration",
keyword1="Remittances",
type="journal"
}