Não informado. (1979). Energy technology. National Swedish Board for Technical Development.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Energy Technology. Stockholm: National Swedish Board for Technical Development, 1979.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Energy Technology. National Swedish Board for Technical Development, 1979.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.