Lua APA (7ú heag.)

Pusat Penelitian dan Pengembangan Geologi (Indonesia). (1981). Publication of the Geological Research and Development Centre. Republic of Indonesia, Ministry of Mines and Energy, Directorate General of Mines, Geological Research and Development Centre.

Lua i Stíl Chicago (17ú heag.)

Pusat Penelitian dan Pengembangan Geologi (Indonesia). Publication of the Geological Research and Development Centre. Bandung, Indonesia: Republic of Indonesia, Ministry of Mines and Energy, Directorate General of Mines, Geological Research and Development Centre, 1981.

Lua MLA (8ú heag.)

Pusat Penelitian dan Pengembangan Geologi (Indonesia). Publication of the Geological Research and Development Centre. Republic of Indonesia, Ministry of Mines and Energy, Directorate General of Mines, Geological Research and Development Centre, 1981.

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