Leenders, M. R. (1965). Improving purchasing effectiveness through supplier development. Division of Research, Graduate School of Business Administration, Harvard University.
Chicago-viite (17. p.)Leenders, Michiel R. Improving Purchasing Effectiveness Through Supplier Development. Boston: Division of Research, Graduate School of Business Administration, Harvard University, 1965.
MLA-viite (9. p.)Leenders, Michiel R. Improving Purchasing Effectiveness Through Supplier Development. Division of Research, Graduate School of Business Administration, Harvard University, 1965.
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