@inbook{Turke1988,
author = {Turke, P.W. },
title= {Helpers at the nest: Childcare networks on Ifaluk},
year = {1988},
editor = {Betzig, L.},
editor = {Borgerhoff Mulder, M.},
editor = {Turke, P. },
booktitle = {Human reproductive behaviour: A Darwinian perspective},
address = {Cambridge},
publisher = {Cambridge University Press},
pages = {173--188},
}