1. Varieties of Delinquent Youth;Sheldon,1949
2. Physique and Delinquency;Glueck,1956
3. Psychiatric Studies of Borstal Lads;Gibbens,1961
4. The Porteus Maze Test and delinquency;Gibbens;Br. J. Educ. Psychol.,1958
5. Morbid psychology of criminals;Nicholson;J. Ment. Sci.,1873