Gray, R. Luhning: Bitumen "The Canadian Encyclopedia"* Jiri Rezac, Alberta Oilsands photo story and aerials* "Exploring the Alberta tar sands", Citizenshift, National Film Board of Canada* Indigenous Groups Lead Struggle Against Canada’s Tar Sands – video report by "Democracy Now!
Oil sands, Tar sands ali Bituminous sands) je mešanica bitumna, peska, gline in vode.