Gaya APA

Heizer, J., Render, B. (2014). Operations Management Sustainabillity and Supply Chain Management (Ed. 11). United States of America: Pearson Education, Inc.

Gaya MLA

Heizer, Jay., Render, Barry. "Operations Management Sustainabillity and Supply Chain Management". Ed. 11 United States of America: Pearson Education, Inc, 2014. Buku.