New Zealand. Parliament. House of Rep. Select Comm. on Foreign Affairs and Defence. Report of the Foreign Affairs ... 1986 t.p. (Helen Clark, chairman of the Committee)
WW in NZ, 12th ed. (Clark, Helen Elizabeth, b. Hamilton [NZ], 26 Feb. 1950)
Wikipedia, Dec. 6, 2008 (Helen Clark; Helen Elizabeth Clark (b. 26 Feb. 1950); New Zealand politician who served as the 37th Prime Minister in three successive terms from 1999 to 2008)