Gaya APA

GROUP, S. et al (1997). Developing An Integrated Energy Supply Chain: Issues And Facing Indonesia . Bandung: Pusat Sumber Daya Geologi.

Gaya MLA

GROUP, SWABARA. et al. "Developing An Integrated Energy Supply Chain: Issues And Facing Indonesia". Bandung: Pusat Sumber Daya Geologi, 1997. Batubara.