Imperial South African Association. (1906). The Transvaal unskilled labour. Imperial South African Association.
Chicago-referens (17:e uppl.)Imperial South African Association. The Transvaal Unskilled Labour. London: Imperial South African Association, 1906.
MLA-referens (8:e uppl.)Imperial South African Association. The Transvaal Unskilled Labour. Imperial South African Association, 1906.
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