Edwards, D., W.(2010).Energy trading & investing; trading, risk management and structuring deals in the energy markets (-).new york:Akademi Komunitas Perkebunan Yogyakarta.
Gaya MLA
Edwards, D., W..Energy trading & investing; trading, risk management and structuring deals in the energy markets.-new york:Akademi Komunitas Perkebunan Yogyakarta,2010.Text.