Ries, A., & Trout, J. (2001). Positioning: The battle for your mind ; [how to be seen and heard in the overcrowded marketplace]. McGraw-Hill.
Citácia podle Chicago (17th ed.)Ries, Al, a Jack Trout. Positioning: The Battle for Your Mind ; [how to Be Seen and Heard in the Overcrowded Marketplace]. New York: McGraw-Hill, 2001.
Citácia podľa MLA (8th ed.)Ries, Al, a Jack Trout. Positioning: The Battle for Your Mind ; [how to Be Seen and Heard in the Overcrowded Marketplace]. McGraw-Hill, 2001.
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