APA aipamena

Van de Walle, E. (1990). Fertility decline in Africa: Assessment and prospects. World Bank.

Chicago Style aipamena

Van de Walle, Etienne. Fertility Decline in Africa: Assessment and Prospects. Washington: World Bank, 1990.

MLA aipamena

Van de Walle, Etienne. Fertility Decline in Africa: Assessment and Prospects. World Bank, 1990.