Não informado. (1967). Mcgraw-Hills air and water news. Air and Water News.
Chicago-Zitierstil (17. Ausg.)Não informado. Mcgraw-Hills Air and Water News. New York: Air and Water News, 1967.
MLA-Zitierstil (8. Ausg.)Não informado. Mcgraw-Hills Air and Water News. Air and Water News, 1967.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.