T., Englefield, Dermot J. (1995). Facts about the British prime ministers : a compilation of biographical and historical information. Seaton, Janet., White, Isobel. London: Mansell. ISBN0720123062. OCLC33043257.{{cite book}}: CS1 maint: multiple names: authors list (link)
worldstatesmen.org
Daniel Hall. "Antigua and Barbuda". Worldstatesmen.org. Archived from the original on 19 July 2012. Retrieved 12 August 2015.
Daniel Hall. "Australia". Worldstatesmen.org. Archived from the original on 25 March 2020. Retrieved 12 August 2015.
Daniel Hall. "The Bahamas". Worldstatesmen.org. Archived from the original on 16 March 2012. Retrieved 12 August 2015.
Daniel Hall. "Barbados". Worldstatesmen.org. Archived from the original on 14 February 2012. Retrieved 12 August 2015.
Daniel Hall. "Belize". Worldstatesmen.org. Archived from the original on 8 August 2017. Retrieved 12 August 2015.
Daniel Hall. "Canada". Worldstatesmen.org. Archived from the original on 16 March 2012. Retrieved 12 August 2015.