Gaya APA
RISTONO, A., PURYANI, .
(2011).
PENELITIAN OPERASIONAL LANJUT
(
EDISI 1)
.
YOGYAKARTA:
GRAHA ILMU.
Gaya MLA
RISTONO, AGUS., PURYANI, .
"PENELITIAN OPERASIONAL LANJUT".
EDISI 1
YOGYAKARTA:
GRAHA ILMU,
2011.
Book.