Walker, O. C., & Boyd, H. W. L. (1995). Marketing strategy: Planning and implementation. Irwin.
Dyfyniad Arddull ChicagoWalker, Orville C., and Harper W. Larreche Boyd. Marketing Strategy: Planning and Implementation. Chicago: Irwin, 1995.
Dyfyniad MLAWalker, Orville C., and Harper W. Larreche Boyd. Marketing Strategy: Planning and Implementation. Irwin, 1995.
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