References
- Holzinger , K. J. 1930 . Statistical Resumé of the Spearman Two-Factor Theory , Chicago : Univ. Chicago Press .
- Landis , C. and Zubin , J. 1951 . The effect of thonzylamine hydrochloride and phenobarbital sodium on certain psychological functions . J. of Psychol , 31 : 181 – 200 .
- Pearson , K. , ed. 1934 . Tables of the Incomplete Beta Function , Cambridge : University Press .
- Yudkin , S. 1941 . Vitamin A and dark adaptation; effect of alcohol, benzedrine, and vitamin . C. Lancet , 2 : 787 – 791 .