Man. N.S. 28 (1): 101-120. Doi:10.2307/2804438
Morley, Paul (21 May 2006). The CDC said that 45.5 % of ladies and 45.7 % of boys had engaged in sexual activity by 19 in 2002; in 2011, reporting their research from 2006 to 2010, they said that 43% of American unmarried teenage girls and 42% of American unmarried teenage boys have ever engaged …