World Health Organization & World Health Organization. Principles for the assessment of risks to human health from exposure to chemicals.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)World Health Organization و World Health Organization. Principles for the Assessment of Risks to Human Health from Exposure to Chemicals.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)World Health Organization و World Health Organization. Principles for the Assessment of Risks to Human Health from Exposure to Chemicals.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.