Organization for Economic Co-operation and Development & World Bank. Ministerial Conference "Environment for Europe" (1993 : Lucerne Switzerland). (1998). Environmental action programme for Central and Eastern Europe: Setting priorities. World Bank.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Organization for Economic Co-operation and Development و World Bank. Ministerial Conference "Environment for Europe" (1993 : Lucerne Switzerland). Environmental Action Programme for Central and Eastern Europe: Setting Priorities. Washington, D. C: World Bank, 1998.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Organization for Economic Co-operation and Development و World Bank. Ministerial Conference "Environment for Europe" (1993 : Lucerne Switzerland). Environmental Action Programme for Central and Eastern Europe: Setting Priorities. World Bank, 1998.