@article{Whitbeck1999,
author = {Whitbeck, L.B. and Yoder, K.A. and Hoyt, D.R. and Conger, R.D.},
title= {Early adolescent sexual activity: a developmental study},
year = {1999},
doi = {10.2307/354014},
journal = {Journal of Marriage and the Family},
volume = {61},
number = {4},
pages = {934--946},
}