Dyfyniad APA

Herrick, B. (1983). Economic development. London: McGraw-Hall International Book Company.

Dyfyniad Arddull Chicago

Herrick, Bruce. Economic Development. London: McGraw-Hall International Book Company, 1983.

Dyfyniad MLA

Herrick, Bruce. Economic Development. London: McGraw-Hall International Book Company, 1983.

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