Cita APA (7th ed.)
Rai, G. (2006). Non - Conventional Energy Sources (4th ed.). Khanna Publishers.
Cita Chicago (17th ed.)
Rai, G.D. Non - Conventional Energy Sources. 4th ed. New Delhi: Khanna Publishers, 2006.
Cita MLA (9th ed.)
Rai, G.D. Non - Conventional Energy Sources. 4th ed. Khanna Publishers, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.