Schuh, C., Raudabaugh, J. L., Kromoser, R., Strohmer, M. F., & Triplat, A. (2012). The Purchasing Chessboard: 64 Methods to Reduce Costs and Increase Value with Suppliers (Second Edition.). Springer New York.
Παραπομπή σε μορφή Chicago (17η εκδ.)Schuh, Christian, Joseph L. Raudabaugh, Robert Kromoser, Michael F. Strohmer, και Alenka Triplat. The Purchasing Chessboard: 64 Methods to Reduce Costs and Increase Value with Suppliers. Second Edition. New York, NY: Springer New York, 2012.
Παραπομπή σε μορφή MLA (8th εκδ.)Schuh, Christian, et al. The Purchasing Chessboard: 64 Methods to Reduce Costs and Increase Value with Suppliers. Second Edition. Springer New York, 2012.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.