Dyfyniad APA

Gillis,Malcolm. (1987). Economics of development (2.). W W Norton & Company.

Dyfyniad Arddull Chicago

Gillis,Malcolm. Economics of Development. 2. New York: W W Norton & Company, 1987.

Dyfyniad MLA

Gillis,Malcolm. Economics of Development. 2. W W Norton & Company, 1987.

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