8[1]Bernardo Prida, Gil Gutierrez. Supply Management: From Purchasing to External Factory Management [J].Production and Inventory Management Journal, 1996,Fourth Quarter: 38-43.
9[2]Edward Topor. Supply Chain Assessment Methodology [C]. APICS-The Education Society for Resource Management, 1998. 501-504
10Anderson K. Martin W. Agricultural trade reform and the Doha Development Agenda. World Economy ,2005,28 : 1301 - 1327.