Cortada, J. (1993). TQM for sales and marketing management. Mc graw hill.
Lua i Stíl Chicago (17ú heag.)Cortada, James. TQM for Sales and Marketing Management. New york: Mc graw hill, 1993.
Lua MLA (9ú heag.)Cortada, James. TQM for Sales and Marketing Management. Mc graw hill, 1993.
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