Shepherd, W. G. (1990). The economics of industrial organization (Third edition.). Prentice Hall International, Inc.
Dyfyniad Arddull ChicagoShepherd, William G. The Economics of Industrial Organization. Third edition. Englewood Cliffs, New Jersey: Prentice Hall International, Inc, 1990.
Dyfyniad MLAShepherd, William G. The Economics of Industrial Organization. Third edition. Prentice Hall International, Inc, 1990.
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