References
- Bancroft , J. ( 1983 ). Human sexuality and its problems . Edinburgh , Scotland : Churchill Livingstone .
- Bancroft , J. ( 1989 ). Human sexuality and its problems () , 2nd ed. . Edinburgh , Scotland : Churchill Livingstone .
- Leiblum , S. R. ( 2007 ). Principles and practice of sex therapy () , 4th ed. . New York , NY : Guilford .