Leenders, M. R. (1997). Purchasing And Supply Management Michiel R. Leenders, Harold E. Fearon. Irwin.
Lua i Stíl Chicago (17ú heag.)Leenders, Michiel R. Purchasing And Supply Management Michiel R. Leenders, Harold E. Fearon. Irwin, 1997.
Lua MLA (8ú heag.)Leenders, Michiel R. Purchasing And Supply Management Michiel R. Leenders, Harold E. Fearon. Irwin, 1997.
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