1. Demographic Trends and Services Provision in Australia;Australian Bankers’ Association,1998
2. The Economic Structure of the Cape Midlands and Karroo Region: a Sectoral and Spatial Survey;Blumenfeld,1971
3. South African Directory 1946-47;Cape Times,1946
4. Citypopulation (undated) Statistics, Maps & Charts. Available at: https://www.citypopulation.de/SouthAfrica-UA.html?cityid=12488. Accessed multiple times in 2018.
5. Big town, small town: the centralisation of services and economic activity, the decline of small towns and the policy response in New South Wales;Collits;Reg. Policy and Pract,1997