متى ظهرة القرصنة في الصومال لأول مرة ؟
الصومال
Hadden, Robert Lee. 2007.  Engineer Research and Development Laboratories, Topographic Engineering Center, Alexandria, VA. Abstract.
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Mwakikagile, Godfrey. The Modern African State: Quest for Transformation, Chapter Four: Somalia: A Stateless State - What Next?, pp.109–132, Nova Science Publishers, Inc., Huntington, New York, 2001.
Tripodi, Paolo. The Colonial Legacy in Somalia. New York: St. Martin's P Inc., 1999.