Al Abbush، I. Z. (2011). Effect of Policy Type on Moral Judgment Toward Recycling Behaviour: The Moderating Effect of Individualism-Collectivism (رسالة ماجستير غير منشورة). University of Exeter، إكستر. مسترجع من http://search.mandumah.com/Record/609961
Al Abbush، Ibrahim Zaid. "Effect of Policy Type On Moral Judgment Toward Recycling Behaviour: The Moderating Effect of Individualism-Collectivism" رسالة ماجستير. University of Exeter، إكستر، 2011. مسترجع من http://search.mandumah.com/Record/609961