Não informado. (1911). Engineering Experiment Station bulletin. Ohio Engineering Experiment Station.
Citação do estilo Chicago (17ª ed.)Não informado. Engineering Experiment Station Bulletin. Columbus, Ohio: Ohio Engineering Experiment Station, 1911.
Citação MLA (8ª ed.)Não informado. Engineering Experiment Station Bulletin. Ohio Engineering Experiment Station, 1911.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.