Dudman John. (1994). Gunung Berapi. Pan Earth Sdn.Bhd..
Chicago Style (17th ed.) CitationDudman John. Gunung Berapi. Petaling Jaya: Pan Earth Sdn.Bhd., 1994.
MLA (9th ed.) CitationDudman John. Gunung Berapi. Pan Earth Sdn.Bhd., 1994.
Warning: These citations may not always be 100% accurate.