1. Ahmed S (2011) The impact of NGOs on international organisations: complexities and considerations. Brooklyn J Int'l L 36(3):817–840 at 822
2. Alston P (ed) (2005) Labour rights as human rights. Oxford University Press
3. Amarsinghe CF (2005) Principles of the institutional law of international organisations, 2nd edn. Cambridge University Press (first edn 1996)
4. Baldwin SE (1907) International congress and conferences of the last century as forces working toward the solidarity of the world. Am J Int’l L 1(3):565–578
5. Bowett DW (2009) Law of international institutions. In: Sands P, Klein P (eds), 6th edn. Sweet & Maxwell, London, p 6