Não informado. (1911). Engineering Experiment Station bulletin. Ohio Engineering Experiment Station.
Chicago-Zitierstil (17. Ausg.)Não informado. Engineering Experiment Station Bulletin. Columbus, Ohio: Ohio Engineering Experiment Station, 1911.
MLA-Zitierstil (8. Ausg.)Não informado. Engineering Experiment Station Bulletin. Ohio Engineering Experiment Station, 1911.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.