APA (7e ed.) Bronvermelding
Johnson, P. F., Flynn, A. E., & Leenders, M. R. (2011). Purchasing and supply management (14th ed.). McGraw-Hill.
Chicago (17e ed.) Bronvermelding
Johnson, P. Fraser, Anna E. Flynn, en Michiel R. Leenders. Purchasing and Supply Management. 14th ed. Boston: McGraw-Hill, 2011.
MLA (9e ed.) Bronvermelding
Johnson, P. Fraser, et al. Purchasing and Supply Management. 14th ed. McGraw-Hill, 2011.
Let op: Deze citaties zijn niet altijd 100% accuraat.