APA استشهاد

Simon,Julian L. (1992). Population and development in poor countries: Selected essays. Princeton university press.

استشهاد بنمط شيكاغو

Simon,Julian L. Population and Development in Poor Countries: Selected Essays. New Jersey: Princeton university press, 1992.

MLA استشهاد

Simon,Julian L. Population and Development in Poor Countries: Selected Essays. Princeton university press, 1992.