APA引文

Marshall, A. (2007). Ethical challenges in study design and informed consent for health research in resource - poor settings. World Health organization.

Chicago Style (17th ed.) Citation

Marshall, A. Ethical Challenges in Study Design and Informed Consent for Health Research in Resource - Poor Settings. Geneva: World Health organization, 2007.

MLA引文

Marshall, A. Ethical Challenges in Study Design and Informed Consent for Health Research in Resource - Poor Settings. World Health organization, 2007.