Who said 'I am become death the destroyer of worlds'?

J. Robert Oppenheimer said or quoted this at the time of the first nuclear test. According to the Wikipedia articles on him: In reference to the Trinity test in New Mexico, where his Los Alamos team first tested the bomb, Oppenheimer famously recalled the Bhagavad Gita: "If the radiance of a thousand suns were to burst at once into the sky, that would be like the splendor of the mighty one. Now I am become Death, the destroyer of worlds." Source: http://en.wikipedia.org/wiki/Robert_Oppenheimer (accessed 15 October 2008.