Taped TV interview, broadcast on WMAL, Washington (January 7, 1972), as reported in "Birth of Child on Moon Foreseen by von Braun", New York Times (p. 14), January 7, 1972.
Lewis Madison Terman (1919). “The Intelligence of School Children: How Children Differ in Ability, the Use of Mental Tests in School Grading and the Proper Education of Exceptional Children”