@article{Jaffe1975,
author = {Jaffe, A.J. and Cullen, R.M.},
title= {Fertility of the Puerto Rican Origin Population-Mainland United States and Puerto Rico: 1970},
year = {1975},
doi = {10.2307/3002749},
journal = {International Migration Review},
volume = {9},
number = {2},
pages = {193--209},
}