Gaya APA

Subagyo, P. et al (1999, 2018). Dasar-dasar operations research (2nd Ed., Cet.12, 20). Yogyakarta: BPFE.

Gaya MLA

Subagyo, Pangestu. et al. "Dasar-dasar operations research". 2nd Ed., Cet.12, 20 Yogyakarta: BPFE, 1999, 2018. Text.