1. Allport, G. W.: Personality: a Psychological Interpretation. Holt. New York. 1937.
2. Rorschach, H.: Psychodiagnostik. 3rd ed. H. Huber. Bern. 1937.
3. Beck, S. J.: Introduction to the Rorschach Method. Am. Orthopsychiat. Asso. Mon., No. 1. 1937.
4. Piotrowski, Z. A.: The methodological aspects of the Rorschach method. Kwart. Psychol., 9:29–41, 1937. Also Rorschach Res. Exch.,1:23–28, 1936.
5. Murray, H. A.: The effect of fear upon estimates of the maliciousness of other personalities. J. Soc. Psychol., 4:310–329, 1933.