References
- Gill , M. M. and Brenman , M. 1959 . Hypnosis and related states , New York : International Universities Press .
- Hilgard , E. R. 1965 . Hypnotic susceptibility , New York : Harcourt, Brace, & World .
- Shor , E. R. and Orne , E. C. 1962 . Harvard Group Scale of Hypnotic Susceptibility, Form A , Palo Alto, Calif. : Consulting Psychologists Press .
- Siegel , S. 1956 . Nonparametric statistics for the behavioral sciences , New York : McGraw-Hill .