Foster, Andrew D. (1990). Fertility decline in Africa: Assessment and prospects. The World Bank.
芝加哥风格引文Foster, Andrew D. Fertility Decline in Africa: Assessment and Prospects. Washington: The World Bank, 1990.
MLA引文Foster, Andrew D. Fertility Decline in Africa: Assessment and Prospects. The World Bank, 1990.
警告：这些引文格式不一定是100％准确.