Gaya APA
KUHN, D, ;, G, A. (2008).
Training Cource Information System Engineering Geology (ISEG) .
Jawa Barat:
Badan Geologi-BGR.
Gaya MLA
KUHN, Dirk, ;, GUNTHER,, Andreas.
"Training Cource Information System Engineering Geology (ISEG)".
Jawa Barat:
Badan Geologi-BGR,
2008.
Laporan.