National Institute of Public Health and Environmental Protection. (1992). The environment in Europe: A global perspective. RIVM, National Institute of Public Health and Environmental Protection.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Institute of Public Health and Environmental Protection. The Environment in Europe: A Global Perspective. The Netherlands: RIVM, National Institute of Public Health and Environmental Protection, 1992.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)National Institute of Public Health and Environmental Protection. The Environment in Europe: A Global Perspective. RIVM, National Institute of Public Health and Environmental Protection, 1992.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.