Orgasnisation for Economic Co-operation and Development. (1980). Environment policies for the 1980s. OECD.
استشهاد بنمط شيكاغوOrgasnisation for Economic Co-operation and Development. Environment Policies for the 1980s. Paris: OECD, 1980.
MLA استشهادOrgasnisation for Economic Co-operation and Development. Environment Policies for the 1980s. OECD, 1980.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.