"Statute of Westminster." The Concise Oxford Dictionary of Politics. Oxford University Press, 1996, 2003. Answers.com 16.9.2010: "countries individually controlled their own domestic and foreign affairs as equal members of the British Commonwealth of Nations"
Hermann Giliomee: The Afrikaners: Biography of a People, s. 355–356. C. Hurst & Co. Publishers, 2003. ISBN 1850657149. Teoksen verkkoversio. (englanniksi)
