Gaya APA

johnson, D, C. (1997). The Inaugural APEC COAL Trade & Investment Liberalisation & Facilitation Workshop PROCEEDINGS . Jakarta: Direktorat Jenderal Pertambangan Umum Direktorat Batubara.

Gaya MLA

johnson, Dr., Charles. "The Inaugural APEC COAL Trade & Investment Liberalisation & Facilitation Workshop PROCEEDINGS". Jakarta: Direktorat Jenderal Pertambangan Umum Direktorat Batubara, 1997. Textbook.