LYSONS. (1991). Purchasing (2nd edition.). Pitman Publ.
Chicago Style (17th ed.) CitationLYSONS. Purchasing. 2nd edition. London: Pitman Publ, 1991.
MLA (8th ed.) CitationLYSONS. Purchasing. 2nd edition. Pitman Publ, 1991.
Warning: These citations may not always be 100% accurate.