@book{94401, author = {Tubert-Oklander, Juan. and Hern?andez de Tubert, Reyna. and ebrary, Inc.}, title = {Operative groups}, publisher = {Jessica Kingsley Pub,}, year = {2004.}, series = {International library of group analysis ;}, address = {London ;}, url = {http://ezproxy.taylors.edu.my/login?url=http://site.ebrary.com/lib/taylorscollege/Doc?id=10064469} }