South Africa. Bureau of Census and Statistics & South Africa. Office of Census and Statistics. (1920). Official year book of the Union and of Basutoland, Bechuanaland Protectorate and Swaziland. Govt. Printer.
芝加哥风格引文South Africa. Bureau of Census and Statistics 与 South Africa. Office of Census and Statistics. Official Year Book of the Union and of Basutoland, Bechuanaland Protectorate and Swaziland. Pretoria, South Africa: Govt. Printer, 1920.
MLA引文South Africa. Bureau of Census and Statistics 与 South Africa. Office of Census and Statistics. Official Year Book of the Union and of Basutoland, Bechuanaland Protectorate and Swaziland. Govt. Printer, 1920.
警告：这些引文格式不一定是100％准确.