APA

Singh S., Alberta Research Council, World Petroleum Congress (13th. : 1991 : Buenos Aires) & Alberta Research Council.Technical and economic factors for establishing hydrocarbon resource cost thresholds. : .

Chicago

Singh S, Alberta Research Council, World Petroleum Congress (13th. : 1991 : Buenos Aires) and Alberta Research Council.Technical and economic factors for establishing hydrocarbon resource cost thresholds. : .

Harvard

Singh S., Alberta Research Council, World Petroleum Congress (13th. : 1991 : Buenos Aires) and Alberta Research Council.Technical and economic factors for establishing hydrocarbon resource cost thresholds. : .

MLA

Singh S, Alberta Research Council, World Petroleum Congress (13th. : 1991 : Buenos Aires) and Alberta Research Council.: . .