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. https://doi.org/10.1007/978-1-4614-2221-1
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিSchuh, Christian, Joseph L. Raudabaugh, Robert Kromoser, Michael F. Strohmer, এবং Alenka Triplat. The Purchasing Chessboard: 64 Methods to Reduce Costs and Increase Value with Suppliers. Second Edition. New York, NY: Springer New York, 2012. https://doi.org/10.1007/978-1-4614-2221-1.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিSchuh, Christian, et al. The Purchasing Chessboard: 64 Methods to Reduce Costs and Increase Value with Suppliers. Second Edition. Springer New York, 2012. https://doi.org/10.1007/978-1-4614-2221-1.