APA (7e ed.) Bronvermelding

Freedman, R., & Coombs, L. C. (1974). Cross-cultural comparisons: Data on two factors in fertility behavior : report of a project of the Subcommittee on Comparative Fertility Analysis of the International Union for the Scientific Study of Population. Population Council.

Chicago (17e ed.) Bronvermelding

Freedman, Ronald, en Lolagene C. Coombs. Cross-cultural Comparisons: Data on Two Factors in Fertility Behavior : Report of a Project of the Subcommittee on Comparative Fertility Analysis of the International Union for the Scientific Study of Population. New York: Population Council, 1974.

MLA (8e ed.) Bronvermelding

Freedman, Ronald, en Lolagene C. Coombs. Cross-cultural Comparisons: Data on Two Factors in Fertility Behavior : Report of a Project of the Subcommittee on Comparative Fertility Analysis of the International Union for the Scientific Study of Population. Population Council, 1974.