V. Kumaraswamy (English Wikipedia)

"Result of Parliamentary General Election 1947" (PDF). Department of Elections, Sri Lanka. Archived from the original (PDF) on 24 September 2015. Retrieved 4 February 2016.
"Result of Parliamentary General Election 1952" (PDF). Department of Elections, Sri Lanka. Archived from the original (PDF) on 24 September 2015. Retrieved 30 December 2013.
"Result of Parliamentary General Election 1956" (PDF). Department of Elections, Sri Lanka. Archived from the original (PDF) on 24 September 2015. Retrieved 14 July 2013.
"Result of Parliamentary General Election 1960-03-19" (PDF). Department of Elections, Sri Lanka. Archived from the original (PDF) on 12 July 2015. Retrieved 30 December 2013.
"Result of Parliamentary General Election 1970" (PDF). Department of Elections, Sri Lanka. Archived from the original (PDF) on 9 December 2009. Retrieved 21 April 2010.
"Result of Parliamentary General Election 1977" (PDF). Department of Elections, Sri Lanka. Archived from the original (PDF) on 17 July 2011. Retrieved 15 March 2013.

web.archive.org (Global: 1^st place; English: 1^st place)

"Result of Parliamentary General Election 1947" (PDF). Department of Elections, Sri Lanka. Archived from the original (PDF) on 24 September 2015. Retrieved 4 February 2016.
Rajasingham, K. T. "Chapter 14: Post-colonial realignment of political forces". Sri Lanka: The Untold Story. Archived from the original on 3 January 2002.
"Result of Parliamentary General Election 1952" (PDF). Department of Elections, Sri Lanka. Archived from the original (PDF) on 24 September 2015. Retrieved 30 December 2013.
Rajasingham, K. T. "Chapter 15: Turbulence in any language". Sri Lanka: The Untold Story. Archived from the original on 8 February 2002.
"Result of Parliamentary General Election 1956" (PDF). Department of Elections, Sri Lanka. Archived from the original (PDF) on 24 September 2015. Retrieved 14 July 2013.
"Result of Parliamentary General Election 1960-03-19" (PDF). Department of Elections, Sri Lanka. Archived from the original (PDF) on 12 July 2015. Retrieved 30 December 2013.
"Result of Parliamentary General Election 1970" (PDF). Department of Elections, Sri Lanka. Archived from the original (PDF) on 9 December 2009. Retrieved 21 April 2010.
"Result of Parliamentary General Election 1977" (PDF). Department of Elections, Sri Lanka. Archived from the original (PDF) on 17 July 2011. Retrieved 15 March 2013.