Marshall, A. (2007). Ethical challenges in study design and informed consent for health research in resource - poor settings. World Health organization.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Marshall, A. Ethical Challenges in Study Design and Informed Consent for Health Research in Resource - Poor Settings. Geneva: World Health organization, 2007.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Marshall, A. Ethical Challenges in Study Design and Informed Consent for Health Research in Resource - Poor Settings. World Health organization, 2007.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.