Selwyn, P. (1975). Industries in the Southern African periphery: A study of industrial development in Botawana, Lesotho and Swaziland. Westview Press.
Chicago-referens (17:e uppl.)Selwyn, Percy. Industries in the Southern African Periphery: A Study of Industrial Development in Botawana, Lesotho and Swaziland. Boulder, Colorado: Westview Press, 1975.
MLA-referens (9:e uppl.)Selwyn, Percy. Industries in the Southern African Periphery: A Study of Industrial Development in Botawana, Lesotho and Swaziland. Westview Press, 1975.
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