CHRYSTAL K ALEC. (1997). ECONOMICS FOR BUSINESS AND MANAGEMENT. OXFORD UNIVERSITY PRESS.
Dyfyniad Arddull ChicagoCHRYSTAL K ALEC. ECONOMICS FOR BUSINESS AND MANAGEMENT. NEW DELHI: OXFORD UNIVERSITY PRESS, 1997.
Dyfyniad MLACHRYSTAL K ALEC. ECONOMICS FOR BUSINESS AND MANAGEMENT. OXFORD UNIVERSITY PRESS, 1997.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.