Bangs, D. H. (1987). Practical marketing: A step by guide to effective planning. Kogan Page Limited.
Chicago Edition CitationBangs, David H. Practical Marketing: A Step by Guide to Effective Planning. London: Kogan Page Limited, 1987.
Cita MLABangs, David H. Practical Marketing: A Step by Guide to Effective Planning. Kogan Page Limited, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.