Little, R. J. A. (1982). Sampling errors of fertility rates from the WFS. International Statistical Institute; World Fertility Survey.
Cita Chicago (17th ed.)Little, Roderick J. A. Sampling Errors of Fertility Rates from the WFS. Voorburg, Netherlands : London, U. K.: International Statistical Institute; World Fertility Survey, 1982.
Cita MLA (8th ed.)Little, Roderick J. A. Sampling Errors of Fertility Rates from the WFS. International Statistical Institute; World Fertility Survey, 1982.
Atenció: Aquestes cites poden no estar 100% correctes.