1. Blake, J. (1970). Demographic science and the redirection of population policy. In T. R. Ford & G. F. DeJong (Eds.),Social demography (pp. 326?347). Englewood Cliffs, NJ: Prentice-Hall.
2. Bloom, D. E. (1984). Delayed childbearing in the United States.Population Research and Policy Review, 3, 103?139.
3. Booth, A., & Duvall, D. (1981). Sex roles and the link between fertility and employment.Sex Roles, 7, 847?856.
4. Cramer, J. C. (1980a). Fertility and female employment: Problems of causal direction.American Sociological Review, 45, 167?190.
5. Cramer, J. C. (1980b). The effects of fertility on husbands' economic activity: Evidence from static, dynamic and nonrecursive models. In J. L. Simon & J. DaVanzo (Eds.),Research in population economics: Vol. 2. A research annual (pp. 151?182). Greenwich, CT: JAI.