29. ——— "Animal Intelligence." Psychological Review Monograph Supplements, Vol. 2, No. 8 (1898).
30. ——— The Measurement of Intelligence. Bureau of Publications, Teachers College, Columbia University, New York; 1926.
31. Tehetsegproblemak (Problems of Talent). Thirteen lectures by various authors, delivered before the Hungarian Society for Child Research and Practical Psychology, Budapest; 1930.
32. VON SCHÖNEICH, CHRISTIAN. Taten, Reisen und Tod eines sehr klugen und sehr artigen 4-jährigen Kindes, Christian Heinrich Heineken aus Lübeck. Zweite veränderte Auflage. Göttingen, 1779 (Erste Auflage, 1726).
33. WADDLE, C. W. "Case Studies of Gifted Children," Part I.
Twenty-third Yearbook, pages 185-207, National Society for the
Study of Education. Public School Publishing Company, Bloomington,
Illinois; 1924.
34. WASHBURNE, C. W. "Case History of J. M.," Part 1. Twenty-third Yearbook, National Society for the Study of Education. Public School Publishing Company, Bloomington, Illinois; 1924.
35. WITTE, K. The Education of Karl Witte. (Translated by L. Wiener.) Bruce Publishing Company, Milwaukee, Wisconsin; 1914.
36. WITTY, P. A., and JENKINS, M. D. "The Case of 'B'—a Gifted Negro Girl." Journal of Social Psychology, Vol. 6, pages 117-124 (1935).
37. YERKES, R. M. (Editor). "Psychological Examining in the United States Army." Memoirs of the National Academy of Sciences, Vol. 15 (1921).
38. ZORBAUGH, H. W. and BOARDMAN, RHEA K. "Salvaging Our Gifted Children." Journal of Educational Sociology, Vol. 10, pages 100-108 (1926).