ZUBER-SKERRITT, Ortrun. Action Research for Sustainable Development in a Turbulent World [electronic resource]. Bradford : Emerald Group Pub., 2012. 1 online resource (269 p.). Dostupné na internetu: <http://search.ebscohost.com/login.aspx?direct=true&scope=site&db=nlebk&db=nlabk&AN=438930> ISBN 9781780525495.