Cita APA

United Nations. Department of Economic and Social Affairs. (1970). Variables and questionnaire for comparative fertility surveys. [s.n.].

Citación estilo Chicago

United Nations. Department of Economic and Social Affairs. Variables and Questionnaire for Comparative Fertility Surveys. New York: [s.n.], 1970.

Cita MLA

United Nations. Department of Economic and Social Affairs. Variables and Questionnaire for Comparative Fertility Surveys. [s.n.], 1970.

Warning: These citations may not always be 100% accurate.