Gaya APA
Gaspersz,p, D. (2017).
Production planning and inventory control ,manufakturing 21 (cet.5).
Jakarta pu:
PT gramedia pustaka utama.
Gaya MLA
Gaspersz,p, Dr.Vincet.
"Production planning and inventory control ,manufakturing 21".
cet.5
Jakarta pu:
PT gramedia pustaka utama,
2017.
Text.