Fitzpatrick, M., & Bonnefoy, X. (1999). Environmental health services in Europe 4: Guidance on the development of educational and training curricula. World Health Organization, Regional Office for Europe.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Fitzpatrick, Martin, و Xavier Bonnefoy. Environmental Health Services in Europe 4: Guidance on the Development of Educational and Training Curricula. Copenhagen: World Health Organization, Regional Office for Europe, 1999.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Fitzpatrick, Martin, و Xavier Bonnefoy. Environmental Health Services in Europe 4: Guidance on the Development of Educational and Training Curricula. World Health Organization, Regional Office for Europe, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.