Gaya APA

Limited, H, &, G. (1983). Coal Gasification Feasibility Study : Final Summary . Palembang: P.T. Pupuk Sriwidjaja.

Gaya MLA

Limited, Humphreys, &, Glasgow. "Coal Gasification Feasibility Study : Final Summary". Palembang: P.T. Pupuk Sriwidjaja, 1983. Text.