VAS, G. (2006). GEOTHERMAL ENERGY THE EARTH'S INNER POWER. RISING SUN.
芝加哥风格引文VAS, GRATIAN. GEOTHERMAL ENERGY THE EARTH'S INNER POWER. UK: RISING SUN, 2006.
MLA引文VAS, GRATIAN. GEOTHERMAL ENERGY THE EARTH'S INNER POWER. RISING SUN, 2006.
警告：这些引文格式不一定是100％准确.