Ahmad. William Gervase Clarence-Smith , 编. The Economics of the IndianOceanSlaveTrade in the Nineteenth Century. Routledge. 2013: 93–99. ISBN 978-1-135-18214-4
Western New England College. "The Roman slave supply (页面存档备份,存于互联网档案馆)" Walter Scheidel. Stanford University. Slavetrade – Britannica Concise Encyclopedia
ISBN 978-0-313-21317-5. Clarence-Smith, W. G. The Economics of the IndianOceanSlaveTrade in the Nineteenth Century. London: Frank Cass. 1989. ISBN 978-0-7146-3359-6