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.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)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.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)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.