@inbook{McNeilly1993,
author = {McNeilly, A.S.},
title= {Breastfeeding and fertility},
year = {1993},
editor = {Gray, R.H.},
editor = {Leridon, H.},
editor = {Spira, A.},
booktitle = {Biomedical and demographic determinants of reproduction},
address = {Oxford},
publisher = {Clarendon Press},
pages = {391--412},
}