@article{Singley1998,
author = {Singley, S. and Landale, N.},
title= {Incorporating origin and process in migration-fertility frameworks. The case of Puerto Rican women},
year = {1998},
doi = {10.2307/3005841},
journal = {Social Forces },
volume = {76},
number = {4},
pages = {1437--1464},
}