Cita APA (7th ed.)

Freedman, D. S., & Mueller, E. (1974). Economic data for fertility analysis. International Statistical Institute ; World Fertility Survey.

Cita Chicago (17th ed.)

Freedman, Deborah S., i Eva Mueller. Economic Data for Fertility Analysis. [Voorburg : London: International Statistical Institute ; World Fertility Survey, 1974.

Cita MLA (8th ed.)

Freedman, Deborah S., i Eva Mueller. Economic Data for Fertility Analysis. International Statistical Institute ; World Fertility Survey, 1974.