Não informado. (1979). International Journal of Lightweight Concrete. Construction Industry Press.
Chicago-referens (17:e uppl.)Não informado. International Journal of Lightweight Concrete. Hornby, Inglaterra: Construction Industry Press, 1979.
MLA-referens (8:e uppl.)Não informado. International Journal of Lightweight Concrete. Construction Industry Press, 1979.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.