Unesco & Singh, M. (1996). Renewable energy of the sun. UNESCO.
Cita Chicago (17th ed.)Unesco i Madanjeet Singh. Renewable Energy of the Sun. Paris: UNESCO, 1996.
Cita MLA (8th ed.)Unesco i Madanjeet Singh. Renewable Energy of the Sun. UNESCO, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.