(1972). Third Conference on Prostaglandins in Fertility Control. World Health Organization.
芝加哥风格引文Third Conference on Prostaglandins in Fertility Control. Stockholm: World Health Organization, 1972.
MLA引文Third Conference on Prostaglandins in Fertility Control. World Health Organization, 1972.
警告：这些引文格式不一定是100％准确.