Alberta. Ministry of Energy, Alberta. Department of Energy, Alberta Energy and Utilities Board, & Albert Petroleum Marketing Commission. (2002). Investing in a sustainable private. Ministry of Energy.
Παραπομπή σε μορφή Chicago (17η εκδ.)Alberta. Ministry of Energy, Alberta. Department of Energy, Alberta Energy and Utilities Board, και Albert Petroleum Marketing Commission. Investing in a Sustainable Private. [Edmonton, Alberta]: Ministry of Energy, 2002.
Παραπομπή σε μορφή MLA (9th εκδ.)Alberta. Ministry of Energy, et al. Investing in a Sustainable Private. Ministry of Energy, 2002.
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