@techreport{Liu1997,
author = {Liu, D. and Liu, D. and Ng, M.L. and Zhou, L.P. and Haeberle, E.J.},
title= {Sexual Behaviour in Modern China: Report on the Nationwide Survey of 20,000 Men and Women},
year = {1997},
publisher = {Continuum 1997},
address = {New York},
}