Não informado. (2004). Agricultural Electronics. American Society of Agricultural Engineers.
Lua i Stíl Chicago (17ú heag.)Não informado. Agricultural Electronics. St. Joseph, Mich: American Society of Agricultural Engineers, 2004.
Lua MLA (8ú heag.)Não informado. Agricultural Electronics. American Society of Agricultural Engineers, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.