2006, International organizations as law-makers, Oxford: Oxford University Press. Examines the growing influence of international organisations such as the United Nations in making and implementing international law.
1998, The procedure of the UN Security Council, Oxford: Oxford University Press. A useful overview of the way the UN Security Council works. and
2009, Five to rule them all: The UN Security Council and the making of the modern world, Oxford: Oxford University Press. A good account of the history and evolution of the UN Security Council.
2008, Law and practice of the United Nations: Documents and commentary, Oxford: Oxford University Press. A helpful collection of primary materials and scholarly commentary., and
2013, International organizations: Politics, law, practice, ed., Cambridge: Cambridge University Press. Theoretically explores the United Nations and other international organisations.
2016, ‘General assemblies and assemblies of states parties’, in , and (eds), Oxford Handbook of International Organizations, Oxford: Oxford University Press. An excellent short overview of the UN General Assembly.
1958, A history of the United Nations Charter: The role of the United States 1940–1945, Washington, DC: Brookings Institution. The classic account of the founding of the United Nations.