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 SO
Kohan, Anthony Lawrence
Plant services and operations handbook
McGraw-Hill, 1995
 Buku Referensi
Rao, R. Kavita
Evolution of Goods and Services Tax in India
Cambridge University Press, 2019
 eBooks
Chase, Richard B.
Production and operations management: manufacturing and services
Irwin , 1995
 Buku Teks SO