(1993). Marketing Essentials Mastering Concepts And Practices / William F. Schoell; Joseph P. Guiltinan And Laura Valvatne. Allyn and Bacon.
Lua i Stíl Chicago (17ú heag.)Marketing Essentials Mastering Concepts And Practices / William F. Schoell; Joseph P. Guiltinan And Laura Valvatne. Allyn and Bacon, 1993.
Lua MLA (8ú heag.)Marketing Essentials Mastering Concepts And Practices / William F. Schoell; Joseph P. Guiltinan And Laura Valvatne. Allyn and Bacon, 1993.
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