Theodore Roosevelt, H. W. Brands (2001). “African Game Trails: An Account of the African Wanderings of an American Hunter-naturalist”, p.21, Rowman & Littlefield
Theodore Roosevelt, H. W. Brands (2001). “African Game Trails: An Account of the African Wanderings of an American Hunter-naturalist”, p.21, Rowman & Littlefield
Star Trek: The Next Generation (television series). This third mission statement was first used in the episode "Encounter at Farpoint" (1987). See Killian 1; Roddenberry 2; Roddenberry 3