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.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিAlberta. Ministry of Energy, Alberta. Department of Energy, Alberta Energy and Utilities Board, এবং Albert Petroleum Marketing Commission. Investing in a Sustainable Private. [Edmonton, Alberta]: Ministry of Energy, 2002.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিAlberta. Ministry of Energy, et al. Investing in a Sustainable Private. Ministry of Energy, 2002.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.