Dyfyniad APA

Gill, R. T. (1973). Economic development: Past and present (3d ed.). Prentice-Hall.

Dyfyniad Arddull Chicago

Gill, Richard T. Economic Development: Past and Present. 3d ed. Englewood Cliffs: Prentice-Hall, 1973.

Dyfyniad MLA

Gill, Richard T. Economic Development: Past and Present. 3d ed. Prentice-Hall, 1973.

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