Imperial South African Association. (1906). The Transvaal unskilled labour. Imperial South African Association.
Lua i Stíl Chicago (17ú heag.)Imperial South African Association. The Transvaal Unskilled Labour. London: Imperial South African Association, 1906.
Lua MLA (8ú heag.)Imperial South African Association. The Transvaal Unskilled Labour. Imperial South African Association, 1906.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.