Walker, E. A. (194). Britain and South Africa. London: Longmans, Green and Co.
Lua i Stíl Chicago (17ú heag.)Walker, Eric A. Britain and South Africa. London: Longmans, Green and Co, 194.
Lua MLA (8ú heag.)Walker, Eric A. Britain and South Africa. London: Longmans, Green and Co, 194.
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