Dyfyniad APA

World Fertility Survey & International Statistical Institute. (1975). Basic documentation. International Statistical Institute.

Dyfyniad Arddull Chicago

World Fertility Survey and International Statistical Institute. Basic Documentation. Voorburg, Netherlands: International Statistical Institute, 1975.

Dyfyniad MLA

World Fertility Survey and International Statistical Institute. Basic Documentation. International Statistical Institute, 1975.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.