World Health Organization. (2011). The fourth ten years of the World Health Organization 1978-1987. World Health Organization.
芝加哥风格引文World Health Organization. The Fourth Ten Years of the World Health Organization 1978-1987. Geneva: World Health Organization, 2011.
MLA引文World Health Organization. The Fourth Ten Years of the World Health Organization 1978-1987. World Health Organization, 2011.
警告：这些引文格式不一定是100％准确.