APA引文

Immerwahr, G. (1981). Contraceptive use in Sri Lanka. International Statistical Institute ; World Fertility Survey.

Chicago Style (17th ed.) Citation

Immerwahr, George. Contraceptive Use in Sri Lanka. Voorburg, Netherlands : London: International Statistical Institute ; World Fertility Survey, 1981.

MLA引文

Immerwahr, George. Contraceptive Use in Sri Lanka. International Statistical Institute ; World Fertility Survey, 1981.

警告：這些引文格式不一定是100％准確.