World energy: looking ahead to 2020 / report by the Conservation Commission of the World Energy Conference.

MLA

World Energy Conference. Conservation Commission. World Energy: Looking Ahead to 2020 / Report by the Conservation Commission of the World Energy Conference. Guildford, 1979.

APA

World Energy Conference. Conservation Commission, W. Energy Conference. Conservation Commission. (1979). World energy: looking ahead to 2020 / report by the Conservation Commission of the World Energy Conference. Guildford.

Chicago

World Energy Conference. Conservation Commission World Energy: Looking Ahead to 2020 / Report by the Conservation Commission of the World Energy Conference. Guildford, 1979.