WHO. (2003). Antenatal care in developing countries: Promises, achievements and missed opportunities: an analysis of trends, level and differentials, 1990-2001.
芝加哥风格引文WHO. Antenatal Care in Developing Countries: Promises, Achievements and Missed Opportunities: An Analysis of Trends, Level and Differentials, 1990-2001. 2003.
MLA引文WHO. Antenatal Care in Developing Countries: Promises, Achievements and Missed Opportunities: An Analysis of Trends, Level and Differentials, 1990-2001. 2003.
警告：这些引文格式不一定是100％准确.