Norman Borlaug's 30th anniversary lecture at the Norwegian Nobel Institute in Oslo (September 8, 2000), as quoted in Ronald Bailey "Global Warming and Other Eco Myths: How the Environmental Movement Uses False Science to Scare Us to Death" (p. 59), 2002.
Martin Luther (2007). “Through the Year with Martin Luther: A Selection of Sermons Celebrating the Feasts and Seasons of the Christian Year”, p.43, Hendrickson Publishers
Jawaharlal Nehru, M. Chalapathi Rau, H. Y. Sharada Prasad, Bal Ram Nanda (1972). “Selected Works of Jawaharlal Nehru: Advisory Board: M. Chalapathi Rau, H. Y. Sharada Prasad, and B. R. Nanda; General Editor: S. Gopal”