Cox, Catharine M.Genetic Studies of Genius. Vol. II, The Early Mental Traits of Three Hundred Geniuses. Stanford, Calif.: Stanford University Press, 1926.
2.
Goertzel V. and Mildred G. Goertzel .Cradles of Eminence. Boston : Little, Brown Co., 1962.
3.
MacKinnon, D. W. (Ed.) The Creative Person . Berkeley, Calif.: University Extension, University of California, 1961.
4.
Torrance, E.P., C.H. Rush, Jr., H.B. Kohn, and J.M. Doughty.Factors in Fighter-Interceptor Pilot Combat Effectiveness . Lackland Air Force Base, Tex.: Air Force Personnel and Training Research Center, 1957.