Kohan, Anthony Lawrence.
Plant services and operations handbook
McGraw-Hill, 1995
 Buku Referensi
Christou, Richard
Sale and supply of goods and services
Sweet and Maxwell, 2010
 Multimedia
Christou, Richard
Sale and supply of goods and services
Sweet & Maxwell, 2010
 Buku Teks
Dilworth, James B., 1939-
Production and operations management: manufacturing and services
McGraw-Hill , 1993
 Buku Teks
Chase, Richard B.
Production and operations management: manufacturing and services
Irwin , 1995
 Buku Teks