@article{Heaton1989,
author = {Heaton, T.B. and Lichter, D. and Amoateng, A.},
title= {The timing of family formation: Rural-urban differentials in first intercourse, childbirth, and marriage},
year = {1989},
journal = {Rural Sociology},
volume = {54},
number = {1},
pages = {1--16},
}