E. G. Boring; H. S. Langfeld; H. Werner; R. M. Yerkes, eds. (1952). "L. L. Thurstone"(PDF). A History of Psychology in Autobiography. Vol. IV. Worcester, MA: Clark University Press. pp. 295–321. Archived from the original(PDF) on 1 June 2010.
E. G. Boring; H. S. Langfeld; H. Werner; R. M. Yerkes, eds. (1952). "L. L. Thurstone"(PDF). A History of Psychology in Autobiography. Vol. IV. Worcester, MA: Clark University Press. pp. 295–321. Archived from the original(PDF) on 1 June 2010.