Day, R. L. (1962). Marketing in action: A dynamic business decision game. Homewood, Illinois: Richard D. Irwin.
Dyfyniad Arddull ChicagoDay, Ralph L. Marketing in Action: A Dynamic Business Decision Game. Homewood, Illinois: Richard D. Irwin, 1962.
Dyfyniad MLADay, Ralph L. Marketing in Action: A Dynamic Business Decision Game. Homewood, Illinois: Richard D. Irwin, 1962.
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