28. Blum RW mais aussi al., The consequences out of race/ethnicity, income, and you may friends build towards teenage chance habits, Western Record regarding Social Wellness, 2000, 90(12):1879–1884.
Hawes ZC, Wellings K and you will Stephenson J, First heterosexual intercourse in the uk: a look at the new literature, Journal out-of Gender Browse, 2010, 47(2):137–152
29. Santelli JS et al., The brand new association away from intimate behaviors with socioeconomic updates, family relations structure, and race/ethnicity in our midst teenagers, American Log from Social Wellness, 2000, 90(10):1582–1588.
34. Kohler PK, Manhart Le and you can Lafferty We, Abstinence-simply and you may total gender training additionally the initiation out of sexual intercourse and you can teen maternity, Journal from Teenage Health, 2008, 42(4):344–351.
thirty-five. Mueller TE, Gavin Ce and you will Kulkarni A great, The brand new organization anywhere between sex degree and you will youth’s involvement inside the intercourse, age to start with intercourse, and contraception explore in the beginning gender, Record from Adolescent Fitness, 2008, 42(1):89–96.