@inbook{Oucho1993,
author = {Oucho, J.O. and Gould, W.T.S.},
title= {Internal migration, urbanization, and population distribution},
year = {1993},
editor = {Foote, K.A.},
editor = {Hill, K.H.},
editor = {Martin, L.G.},
booktitle = {Demographic change in sub-Saharan Africa},
address = {Washington DC},
publisher = {National Academy Press},
pages = {256--296},
}