Gaya APA
Subagyo, P.
(1991).
Dasar-dasar Operations Research
.
Yogyakarta:
BPFE Yogyakarta.
Gaya MLA
Subagyo, Pangestu.
"Dasar-dasar Operations Research".
Yogyakarta:
BPFE Yogyakarta,
1991.
Text.