Dyfyniad APA

Cooper, M., & Maynard, A. K. (1971). The price of air travel. Institute of Economic Affairs.

Dyfyniad Arddull Chicago

Cooper, M.H, and Alan Keith Maynard. The Price of Air Travel. [London]: Institute of Economic Affairs, 1971.

Dyfyniad MLA

Cooper, M.H, and Alan Keith Maynard. The Price of Air Travel. Institute of Economic Affairs, 1971.

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