Não informado. (1968). Chem 13 News. University of Waterloo, Department of Chemistry.
Chicago-referens (17:e uppl.)Não informado. Chem 13 News. Waterloo, Canada: University of Waterloo, Department of Chemistry, 1968.
MLA-referens (8:e uppl.)Não informado. Chem 13 News. University of Waterloo, Department of Chemistry, 1968.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.