Gaya APA

Renewable energy : its physics, engineering, use, environmental impacts, economy, and planning aspects / Bent Sorensen. (2004). : USA, Elsevier Academic Press.

Gaya MLA

Renewable energy : its physics, engineering, use, environmental impacts, economy, and planning aspects / Bent Sorensen. ed ke-3. : USA, Elsevier Academic Press, 2004. Text.