World Health Organization. Regional Office for Europe & ebrary, Inc. (2010). Health and the environment in Europe: Progress assesment. WHO Regional Office for Europe.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)World Health Organization. Regional Office for Europe و Inc ebrary. Health and the Environment in Europe: Progress Assesment. Copenhagen: WHO Regional Office for Europe, 2010.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)World Health Organization. Regional Office for Europe و Inc ebrary. Health and the Environment in Europe: Progress Assesment. WHO Regional Office for Europe, 2010.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.