Schuh, C., Raudabaugh, J. L., Kromoser, R., Strohmer, M. F., Triplat, A., & Pearce, J. (2017). The Purchasing Chessboard: 64 Methods to Reduce Costs and Increase Value with Suppliers (Third Edition.). Springer New York : Imprint: Springer.
Παραπομπή σε μορφή Chicago (17η εκδ.)Schuh, Christian, Joseph L. Raudabaugh, Robert Kromoser, Michael F. Strohmer, Alenka Triplat, και Jim Pearce. The Purchasing Chessboard: 64 Methods to Reduce Costs and Increase Value with Suppliers. Third Edition. New York, NY: Springer New York : Imprint: Springer, 2017.
Παραπομπή σε μορφή MLA (8th εκδ.)Schuh, Christian, et al. The Purchasing Chessboard: 64 Methods to Reduce Costs and Increase Value with Suppliers. Third Edition. Springer New York : Imprint: Springer, 2017.
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