World Summit on Sustainable Development Johannesburg, South Africa. (2002). Opec nations and the global dialogue on sustainable development: Statements from the United Nations World Summit on Sustainable Development (WSSD) : Johannesburg, South Africa, August 26-September 4, 2002. The Fund.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)World Summit on Sustainable Development Johannesburg, South Africa. Opec Nations and the Global Dialogue on Sustainable Development: Statements from the United Nations World Summit on Sustainable Development (WSSD) : Johannesburg, South Africa, August 26-September 4, 2002. Vienna, Austria: The Fund, 2002.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)World Summit on Sustainable Development Johannesburg, South Africa. Opec Nations and the Global Dialogue on Sustainable Development: Statements from the United Nations World Summit on Sustainable Development (WSSD) : Johannesburg, South Africa, August 26-September 4, 2002. The Fund, 2002.