Gaya APA
Rifal, R. (2009).
Spatial Modeling And Element at Risk Assessment of SIDOARJO Mud Volcanic Flow (cet. pertama).
Yogyakarta:
UGM Press.
Gaya MLA
Rifal, Rachman.
"Spatial Modeling And Element at Risk Assessment of SIDOARJO Mud Volcanic Flow".
cet. pertama
Yogyakarta:
UGM Press,
2009.
Buku TP.