Gaya APA
Subagyo, P. et al
(1984).
Dasar-dasar operations research
.
Yogyakarta:
BPFE Yogyakarta.
Gaya MLA
Subagyo, Pangestu. et al.
"Dasar-dasar operations research".
Yogyakarta:
BPFE Yogyakarta,
1984.
Text.