Gaya APA

DIRKS, F, R, D, S, J, V, D. (1990). Water resources development in West Java . : Iwaco.

Gaya MLA

DIRKS, F.J.H.;, RISMIANTO,, Djoko;, SOMMEN,, J.J., Van, Der. "Water resources development in West Java". : Iwaco, 1990. Laporan.