@inbook{Woynarowska2007,
author = {Woynarowska, B.},
title= {Sexual behaviours of females aged 16 and 18},
year = {2007},
booktitle = {Reproductive Health: UNDP Report on Social Development},
address = {Warsaw},
publisher = {UNDP-UNFPA and Ministry of Health},
pages = {85--86},
series = {in Polish},
}