Dyfyniad APA

Mansfield, E., & Mansfield, E. (1993). The Economics of technical change. E. Elgar Pub.

Dyfyniad Arddull Chicago

Mansfield, Edwin, and Elizabeth Mansfield. The Economics of Technical Change. Aldershot, Hants, England, Brookfield, Vt., USA: E. Elgar Pub, 1993.

Dyfyniad MLA

Mansfield, Edwin, and Elizabeth Mansfield. The Economics of Technical Change. E. Elgar Pub, 1993.

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