Caples, J. (1974). Tested advertising methods (4th ed.). Prentice-Hall.
Chicago Style (17th ed.) CitationCaples, John. Tested Advertising Methods. 4th ed. Englewood Cliffs, N. J: Prentice-Hall, 1974.
MLA (9th ed.) CitationCaples, John. Tested Advertising Methods. 4th ed. Prentice-Hall, 1974.
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