Gaya APA
Subagyo, P.
(1999).
Dasar-dasar Operation Research
(
2)
.
Yogyakarta:
BPFE Yogyarta.
Gaya MLA
Subagyo, Pangestu.
"Dasar-dasar Operation Research".
2
Yogyakarta:
BPFE Yogyarta,
1999.
Textbook.