TAMPUBOLON, M. P., & SIKUMBANK, R. F. [. (2004). Manajemen operasional (operations management)/editor Risman F. Sikumbank.-- ed.1. Ghalia Indonesia.

TAMPUBOLON, Manahan P., and Risman F. [ed] SIKUMBANK. Manajemen Operasional (operations Management)/editor Risman F. Sikumbank.-- Ed.1. Jakarta: Ghalia Indonesia, 2004.

TAMPUBOLON, Manahan P., and Risman F. [ed] SIKUMBANK. Manajemen Operasional (operations Management)/editor Risman F. Sikumbank.-- Ed.1. Ghalia Indonesia, 2004.