Callender, G., & Hallikas, J. (2010). Defining and Estimating National Procurement Spend: A Public, Private, Not-For-Profit Sector Comparison. IPSERA International Purchasing and Supply Education and Research Association.
Chicago Style (17th ed.) CitationCallender, Guy, and Jukka Hallikas. Defining and Estimating National Procurement Spend: A Public, Private, Not-For-Profit Sector Comparison. IPSERA International Purchasing and Supply Education and Research Association, 2010.
MLA (9th ed.) CitationCallender, Guy, and Jukka Hallikas. Defining and Estimating National Procurement Spend: A Public, Private, Not-For-Profit Sector Comparison. IPSERA International Purchasing and Supply Education and Research Association, 2010.
Warning: These citations may not always be 100% accurate.