Randall, G. (1993). Principles of marketing. London ; New York: Routledge.
Trích dẫn kiểu ChicagoRandall, Geoffrey. Principles of Marketing. London ; New York: Routledge, 1993.
Deismireacht MLARandall, Geoffrey. Principles of Marketing. London ; New York: Routledge, 1993.
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