APA

Häfele W., Nakicenovic N., International Institute for Applied Systems Analysis I., World Petroleum Congress (11th. : 1983 : London), Nakicenovic N. & International Institute for Applied Systems Analysis I.The contribution of oil and gas for the transition to long range novel energy systems. : .

Chicago

Häfele Wolf, Nakicenovic Nebojsa, International Institute for Applied Systems Analysis IIASA, World Petroleum Congress (11th. : 1983 : London), Nakicenovic Nebojsa and International Institute for Applied Systems Analysis IIASA.The contribution of oil and gas for the transition to long range novel energy systems. : .

Harvard

Häfele W., Nakicenovic N., International Institute for Applied Systems Analysis I., World Petroleum Congress (11th. : 1983 : London), Nakicenovic N. and International Institute for Applied Systems Analysis I.The contribution of oil and gas for the transition to long range novel energy systems. : .

MLA

Häfele Wolf, Nakicenovic Nebojsa, International Institute for Applied Systems Analysis IIASA, World Petroleum Congress (11th. : 1983 : London), Nakicenovic Nebojsa and International Institute for Applied Systems Analysis IIASA.: . .