APA (7e ed.) Bronvermelding

Freedman, D. S., & Mueller, E. (1974). Economic modules for use in fertility surveys in less developed countries. International Statistical Institute ; World Fertility Survey.

Chicago (17e ed.) Bronvermelding

Freedman, Deborah S., en Eva Mueller. Economic Modules for Use in Fertility Surveys in Less Developed Countries. [Voorburg : London: International Statistical Institute ; World Fertility Survey, 1974.

MLA (8e ed.) Bronvermelding

Freedman, Deborah S., en Eva Mueller. Economic Modules for Use in Fertility Surveys in Less Developed Countries. International Statistical Institute ; World Fertility Survey, 1974.