Gaya APA

Purnomo, H. (). Lemigas Scientific Contributions to Petroleum Science & Technology Vol. 32 No. 1 April 2009 (April 2009). Jakarta: Grafika LEMIGAS.

Gaya MLA

Purnomo, Hadi. "Lemigas Scientific Contributions to Petroleum Science & Technology Vol. 32 No. 1 April 2009". April 2009 Jakarta: Grafika LEMIGAS, . Text.