Gaya APA

Purnomo, H. (2008). Lemigas Scientific Contributions to Petroleum Science & Technology Vol. 31 No. 1 April 2008 (April 2008). Jakarta: Grafika LEMIGAS.

Gaya MLA

Purnomo, Hadi. "Lemigas Scientific Contributions to Petroleum Science & Technology Vol. 31 No. 1 April 2008". April 2008 Jakarta: Grafika LEMIGAS, 2008. Text.