Gaya APA

Soelistijo, U, W, (. (1985). Towards Indonesian Coal as Energy Alternative for Domestic Consumption of Oil . : Mineral Technology Development Centre Directorate Gneral of Mining.

Gaya MLA

Soelistijo, Ukar, W., (dkk.). "Towards Indonesian Coal as Energy Alternative for Domestic Consumption of Oil". : Mineral Technology Development Centre Directorate Gneral of Mining, 1985. Text.