Dyfyniad APA

Freeman, C. (1974). Economic of industrial innovation. Penguin.

Dyfyniad Arddull Chicago

Freeman, Christopher. Economic of Industrial Innovation. Middesex: Penguin, 1974.

Dyfyniad MLA

Freeman, Christopher. Economic of Industrial Innovation. Penguin, 1974.

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