@inbook{Spring2016,
author = {Spring, A. and Tolnay, S.E. and Crowder, K.},
title= {Moving for opportunities? Changing patterns of migration in North America},
year = {2016},
doi = {10.1007/978-94-017-7282-2_19},
editor = {White, M.J.},
booktitle = {International handbook of migration and population distribution},
address = {New York},
publisher = {Springer},
pages = {421--448},
}