Não informado. (1947). Ohio farm and home research. Ohio Agricultural Experiment Station.
Chicago-referens (17:e uppl.)Não informado. Ohio Farm and Home Research. Wooster, Ohio: Ohio Agricultural Experiment Station, 1947.
MLA-referens (8:e uppl.)Não informado. Ohio Farm and Home Research. Ohio Agricultural Experiment Station, 1947.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.