@book{Ryder1969,
author = {Ryder, N.B. and Westoff, C.F.},
title= {Relationships among intended, expected, desired, and ideal family size: United States 1965},
year = {1969},
publisher = {U.S. Department of Health, Education, and Welfare, Public Health Service, National Institutes of Health, National Institute of Child Health and Human Development, Center for Population Research},
}