Shepherd, W. G. (1990). The economics of industrial organization (3rd ed.). Englewood Cliffs, NJ.: Prentice-Hall International.
Παραπομπή Chicago StyleShepherd, William G. The Economics of Industrial Organization. 3rd ed. Englewood Cliffs, NJ.: Prentice-Hall International, 1990.
Παραπομπή MLAShepherd, William G. The Economics of Industrial Organization. 3rd ed. Englewood Cliffs, NJ.: Prentice-Hall International, 1990.
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