Sawhney,g.s. (2012). Non-conventional energy resources. PHI learning pvt.
Chicagoスタイル(17版)引用形式Sawhney,g.s. Non-conventional Energy Resources. Delhi: PHI learning pvt, 2012.
MLA(9版)引用形式Sawhney,g.s. Non-conventional Energy Resources. PHI learning pvt, 2012.
警告: この引用は必ずしも正確ではありません.