توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Alkema, L., & Chou, D. (2014). Trends in maternal mortality: 1990 to 2013. estimates by WHO, UNICEF, UNFPA, The World Bank and the United Nations Population Division. World Health Organization.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Alkema, Leontine, و Doris Chou. Trends in Maternal Mortality: 1990 to 2013. Estimates by WHO, UNICEF, UNFPA, The World Bank and the United Nations Population Division. Geveva, Switzerland: World Health Organization, 2014.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Alkema, Leontine, و Doris Chou. Trends in Maternal Mortality: 1990 to 2013. Estimates by WHO, UNICEF, UNFPA, The World Bank and the United Nations Population Division. World Health Organization, 2014.