1. Bakker, C. B., and Dightman, C. R. Birth control: Are doctors helpful? In preparation.
2. The 16 Personality Factor Questionnaire;Cattell,1963
3. Oral contraception by norethynodrel;Cook;Am. J. Obst. & Gynec.,1961
4. Edwards Personal Preference Schedule;Edwards,1953
5. Minnesota Multiphasic Personality Inventory;Hathaway,1943