@inbook{Gurak1992,
author = {Gurak, D.T. and Caces, F. },
title= {Migration Networks and the Shaping of Migration Systems},
year = {1992},
editor = {Kritz, M.},
editor = {Lim, L.L. },
editor = {Zlotnik, H.},
booktitle = {International Migration Systems},
address = {Oxford},
publisher = {Clarendon},
pages = {150--176},
}