Não informado. (1911). Engineering Experiment Station bulletin. Ohio Engineering Experiment Station.
Chicago-referens (17:e uppl.)Não informado. Engineering Experiment Station Bulletin. Columbus, Ohio: Ohio Engineering Experiment Station, 1911.
MLA-referens (8:e uppl.)Não informado. Engineering Experiment Station Bulletin. Ohio Engineering Experiment Station, 1911.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.