Gaya APA

Simamora, S. et al (1990). Operasional riset dan aplikasinya dalam managemen = operational research and its management application (Cet. 2). Jakarta: Bumi Aksara.

Gaya MLA

Simamora, Sahat. et al. "Operasional riset dan aplikasinya dalam managemen = operational research and its management application". Cet. 2 Jakarta: Bumi Aksara, 1990. Text.