Gaya APA

Hartoyo, B., Saleh, R. (1994). Some Informations Of Coal Mining Investment In Indonesia, Country Report Presented In Training Course On Coal Related Technology-Jatec May 23-July 3.1994 Tokyo,Japan . Bandung: Directorate Of Coal.

Gaya MLA

Hartoyo, Bambang., Saleh, Rachmat. "Some Informations Of Coal Mining Investment In Indonesia, Country Report Presented In Training Course On Coal Related Technology-Jatec May 23-July 3.1994 Tokyo,Japan". Bandung: Directorate Of Coal, 1994. Batubara.