Gaya APA

Siswanto, . et al (2007). Operation research [Jilid 1 & 2] (Jil.1 & 2). Jakarta: Erlangga.

Gaya MLA

Siswanto, . et al. "Operation research [Jilid 1 & 2]". Jil.1 & 2 Jakarta: Erlangga, 2007. Text.