1. Sexual activity, contraceptive use and pregnancy among metropolitan-area teenagers: 1971–1979;Zelnik;Fam Plann Perspect,1980
2. Adolescent sexuality in contemporary America;Sorenson,1973
3. Teenage sexuality—a survey of teenage sexual behavior;Haas,1979
4. Sex and the American teenager;Coles,1985
5. Adolescent sexuality in a changing American society;Chilman,1983