Não informado. (1977). Fueloil and oil heat and solar systems. Industry Publications.
Chicago-Zitierstil (17. Ausg.)Não informado. Fueloil and Oil Heat and Solar Systems. Cedar Grove, NJ: Industry Publications, 1977.
MLA-Zitierstil (8. Ausg.)Não informado. Fueloil and Oil Heat and Solar Systems. Industry Publications, 1977.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.