APA (7th ed.) Citation

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 Style (17th ed.) Citation

Wishik, Samuel M., and 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 (9th ed.) Citation

Wishik, Samuel M., and 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.