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Ray, Michael L. (1973-01-01). "A Decision Sequence Analysis of Developments in Marketing Communication". Journal of Marketing. 37 (1): 29–38. doi:10.2307/1250772. JSTOR1250772.
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Maggard, John P. (1976-01-01). "Positioning Revisited". Journal of Marketing. 40 (1): 63–66. doi:10.2307/1250678. JSTOR1250678.
Ray, Michael L. (1973-01-01). "A Decision Sequence Analysis of Developments in Marketing Communication". Journal of Marketing. 37 (1): 29–38. doi:10.2307/1250772. JSTOR1250772.
leading.vn
Andrei, P; Ecaterina, B, R; Ionut, T. C (2010). "Does Positioning Have a Place in the Minds of our Students?". Annals of the University of Oradea, Economic Science Series.{{cite journal}}: CS1 maint: multiple names: authors list (link)[1]