Gaya APA

Heizer, J., Render, B. (2011). Operations management (10th.Ed.,Global.Ed.). Upper Saddle River, NJ: Pearson Education Int..

Gaya MLA

Heizer, Jay., Render, Barry. "Operations management". 10th.Ed.,Global.Ed. Upper Saddle River, NJ: Pearson Education Int., 2011. Text.