Gaya APA

Ballou, R, H. (2004). Business Longistics / Supply Chain Management : Planning, Organizing and Controlling the Supply Chain (5). Singapore: Pearson Education.

Gaya MLA

Ballou, Ronald, H.. "Business Longistics / Supply Chain Management : Planning, Organizing and Controlling the Supply Chain". 5 Singapore: Pearson Education, 2004. Text.