1. United Nations Report by Secretary-General, UN E/4132, Development of Non-Agricultural Resources (Jan. 8, 1966).
2. Origin of Athabasca Oil Sands: A Review;Conybeare;Bull. Can. Pet. Geol.,1966
3. Alberta Oil and Gas Conservation Board, A Description and Reserve Estimate of the Oil Sands of Alberta (1963).
4. The K.A. Clarke Volume — A Collection of Papers on the Athabasca Oil Sands,1963