TY - JOUR A1 - Manlove, J. A1 - Wildsmith, E. A1 - Ikramullah, E. A1 - Terry-Humen, E. A1 - Schelar, E. T1 - Family environments and the relationship context of first adolescent sex: Correlates of first sex in a casual versus steady relationship Y1 - 2012 DO - 10.1016/j.ssresearch.2012.02.003 VL - 41 ER -