Gaya APA

PUTROHARI, R, D, D, S. (1999). Development in engineering, environment, and numerical geology: Proceedings of Indoensia Association of Geologist vol. IV. The 28th annual ....... . : IAGI.

Gaya MLA

PUTROHARI, Rovicky, Dwi;, DJUWANDI,, Sukma. "Development in engineering, environment, and numerical geology: Proceedings of Indoensia Association of Geologist vol. IV. The 28th annual .......". : IAGI, 1999. Buku.