APA

Rai (G D), . (1999). Non-Convential Sources Of Energy. : .

Chicago

Rai (G D), . 1999. Non-Convential Sources Of Energy. : .

Harvard

Rai (G D), . (1999). Non-Convential Sources Of Energy. : .

MLA

Rai (G D), . Non-Convential Sources Of Energy. : . 1999.