World Health Organization. (1981). Infant and young child feeding current issues. World Health Organization.
芝加哥风格引文World Health Organization. Infant and Young Child Feeding Current Issues. Geneva: World Health Organization, 1981.
MLA引文World Health Organization. Infant and Young Child Feeding Current Issues. World Health Organization, 1981.
警告：这些引文格式不一定是100％准确.