Gaya APA

Ngo, C., Natowitz, J, B. (2009). Our Energy Future: Resources, Alternatives, and the Environment (-). Hoboken: John Wiley & Sons.

Gaya MLA

Ngo, Christian., Natowitz, Joseph, B.. "Our Energy Future: Resources, Alternatives, and the Environment". - Hoboken: John Wiley & Sons, 2009. Text.