World Energy Conference. Conservation Commission, Peters, W., & Schilling, H. (1978). Coal resources: The full report to the Conservation Commission of the World Energy Conference. IPC Science and Technology Press for the WEC.
Lua i Stíl Chicago (17ú heag.)World Energy Conference. Conservation Commission, W. Peters, agus H.-D Schilling. Coal Resources: The Full Report to the Conservation Commission of the World Energy Conference. Guildford: IPC Science and Technology Press for the WEC, 1978.
Lua MLA (8ú heag.)World Energy Conference. Conservation Commission, et al. Coal Resources: The Full Report to the Conservation Commission of the World Energy Conference. IPC Science and Technology Press for the WEC, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.