Armstrong, G. (2006). Marketing: An introduction. Upper Saddle River, N.J: Pearson Prentice Hall.
Dyfyniad Arddull ChicagoArmstrong, Gary. Marketing: An Introduction. Upper Saddle River, N.J: Pearson Prentice Hall, 2006.
Dyfyniad MLAArmstrong, Gary. Marketing: An Introduction. Upper Saddle River, N.J: Pearson Prentice Hall, 2006.
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