See C. Fayein, A French Doctor in the Yemen (tr. 1957); E. Macro, Yemen and the Western World since 1571 (1968); E. O'Ballance, The War in the Yemen (1971); R. W. Stookey, South Yemen (1982); R. Bidwell, The Two Yemens (1983); R. F. Nyrop, ed., Yemens (1986); P. Dresch, Tribes, Government and History in Yemen (1989); F. Halliday, Revolution and Foreign Policy: The Case of South Yemen (1989); T. Mackintosh-Smith, Yemen: The Unknown Arabia (2000); P. Dresch, A History of Modern Yemen (2001); V. Clark, Yemen: Dancing on the Heads of Snakes (2010).
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