Dyfyniad APA

(1979). World population and development: Challenges and prospects. Syracuse university.

Dyfyniad Arddull Chicago

World Population and Development: Challenges and Prospects. New York: Syracuse university, 1979.

Dyfyniad MLA

World Population and Development: Challenges and Prospects. Syracuse university, 1979.

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