Cleland, J. G., Scott, C., & Whitelegge, D. (1987). The World Fertility Survey: An assessment. For the International Statistical Institute by Oxford University Press.
Cita Chicago (17th ed.)Cleland, John G., Christopher Scott, i David Whitelegge. The World Fertility Survey: An Assessment. Oxford: For the International Statistical Institute by Oxford University Press, 1987.
Cita MLA (9th ed.)Cleland, John G., et al. The World Fertility Survey: An Assessment. For the International Statistical Institute by Oxford University Press, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.