Wishik, S. M., & Helbig, D. W. (1972). The fertiility pattern method: Estimation of fertility change by retrospective quasi-cohort analysis of group-specific fertility patterns. Division of Social and Administrative Sciences, International Institute for the Study of Human Reproduction, Columbia University.
Chicagoスタイル(17版)引用形式Wishik, Samuel M., , Donald W. Helbig. The Fertiility Pattern Method: Estimation of Fertility Change by Retrospective Quasi-cohort Analysis of Group-specific Fertility Patterns. New York: Division of Social and Administrative Sciences, International Institute for the Study of Human Reproduction, Columbia University, 1972.
MLA(9版)引用形式Wishik, Samuel M., , Donald W. Helbig. The Fertiility Pattern Method: Estimation of Fertility Change by Retrospective Quasi-cohort Analysis of Group-specific Fertility Patterns. Division of Social and Administrative Sciences, International Institute for the Study of Human Reproduction, Columbia University, 1972.