1. Adler E (1997) Seizing the middle ground: Constructivism in world politics. Eur J Int Relat 3(3):319–363
2. Albert M, Buzan B (2013) International relations theory and the ‘social whole’: Encounters and gaps between IR and Sociology. Int Political Sociol 7:117–135
3. Aron R (1967) What is a theory of International Relations? J Int Affairs 21(1):185–206
4. Cape of Good Hope (1898) Debates in the House of Assembly in the First Session of the Tenth Parliament of the Cape of Good Hope, 7th October to 23rd December 1898. Cape Hansard, Cape Times Limited, Cape Town
5. Cape of Good Hope (1899a) Douglas irrigation works on Vaal River, Griqualand West: Description of scheme and information regarding the whole works as completed to December 1898, with plan and photographs. W.A. Richardson & Sons, Cape Town