, I. S. (2010). A Geophysical characteristic over kelud caldera post November 2007 Eruption. [Yogyakarta] : World Geothermal.
Chicago Style Citation, Imam Suyanto. A Geophysical Characteristic Over Kelud Caldera Post November 2007 Eruption. [Yogyakarta] : World Geothermal, 2010.
MLA引文, Imam Suyanto. A Geophysical Characteristic Over Kelud Caldera Post November 2007 Eruption. [Yogyakarta] : World Geothermal, 2010.
警告：這些引文格式不一定是100％准確.