APA
Dobler & Burt, . (1996). Purchasing and supply management. : N york mcgrew comp.
Chicago
Dobler & Burt, . 1996. Purchasing and supply management. : N york mcgrew comp.
Harvard
Dobler & Burt, . (1996). Purchasing and supply management. : N york mcgrew comp.
MLA
Dobler & Burt, . Purchasing and supply management. : N york mcgrew comp. 1996.