World Health Organization. Regional Office for Europe, ebrary, Inc, & Amann, M. (2008). Health risks of ozone from long-range transboundary air pollution. World Health Organization, Regional Office for Europe.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)World Health Organization. Regional Office for Europe, Inc ebrary, و Madrkus Amann. Health Risks of Ozone from Long-range Transboundary Air Pollution. Copenhagen: World Health Organization, Regional Office for Europe, 2008.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)World Health Organization. Regional Office for Europe, et al. Health Risks of Ozone from Long-range Transboundary Air Pollution. World Health Organization, Regional Office for Europe, 2008.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.