Não informado. (2004). Agricultural Electronics. American Society of Agricultural Engineers.
Chicago-referens (17:e uppl.)Não informado. Agricultural Electronics. St. Joseph, Mich: American Society of Agricultural Engineers, 2004.
MLA-referens (8:e uppl.)Não informado. Agricultural Electronics. American Society of Agricultural Engineers, 2004.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.