ebrary, Inc, & Spadoni, G. (2009). Energy conservation: New research. Nova Science Publishers.
Cita Chicago (17th ed.)ebrary, Inc, i Giacomo Spadoni. Energy Conservation: New Research. New York: Nova Science Publishers, 2009.
Cita MLA (9th ed.)ebrary, Inc, i Giacomo Spadoni. Energy Conservation: New Research. Nova Science Publishers, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.