World Energy Conference. (1978). World energy resources, 1985-2020. IPC Science & Technology Press for the W.E.C..
Chicago (17e ed.) BronvermeldingWorld Energy Conference. World Energy Resources, 1985-2020. Guildford, UK: IPC Science & Technology Press for the W.E.C., 1978.
MLA (9e ed.) BronvermeldingWorld Energy Conference. World Energy Resources, 1985-2020. IPC Science & Technology Press for the W.E.C., 1978.
Let op: Deze citaties zijn niet altijd 100% accuraat.