SCHWARTZ, D. J. (1981). Marketing To Day A Basic Approach David J. Schwartz. Harcourt Brace Javanovich.
Lua i Stíl Chicago (17ú heag.)SCHWARTZ, David J. Marketing To Day A Basic Approach David J. Schwartz. Harcourt Brace Javanovich, 1981.
Lua MLA (8ú heag.)SCHWARTZ, David J. Marketing To Day A Basic Approach David J. Schwartz. Harcourt Brace Javanovich, 1981.
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