Fawkes, S. (2013). Energy efficiency: The definitive guide to the cheapest, cleanest, fastest source of energy. Gower.
Chicago-viite (17. p.)Fawkes, Steven. Energy Efficiency: The Definitive Guide to the Cheapest, Cleanest, Fastest Source of Energy. Farnham, Surrey, England: Gower, 2013.
MLA-viite (9. p.)Fawkes, Steven. Energy Efficiency: The Definitive Guide to the Cheapest, Cleanest, Fastest Source of Energy. Gower, 2013.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.