Gaya APA

Subagyo, P. et al (2011). Dasar- dasar Operations Research (2nd. Ed). Yogyakarta: BPFE Yogyakarta.

Gaya MLA

Subagyo, Pangestu. et al. "Dasar- dasar Operations Research". 2nd. Ed Yogyakarta: BPFE Yogyakarta, 2011. Text.