COREY, E. R. (1991). Industrial Marketing Cases And Concepts E. Raymond Corey. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)COREY, E. Raymond. Industrial Marketing Cases And Concepts E. Raymond Corey. Prentice Hall, 1991.
Lua MLA (8ú heag.)COREY, E. Raymond. Industrial Marketing Cases And Concepts E. Raymond Corey. Prentice Hall, 1991.
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