Gaya APA

Geologi, P, S, D. (2001). Clean Coal Technology Demonstration Program: Program Update 2000 . Bandung: U.S. department of Energy.

Gaya MLA

Geologi, Pusat, Sumber, Daya. "Clean Coal Technology Demonstration Program: Program Update 2000". Bandung: U.S. department of Energy, 2001. Batubara.