National College of Agricultural Engineering & Plant Protection Ltd. (1973). Satec multi-crop seeder. National College of Agricultural Engineering].
Chicago-referens (17:e uppl.)National College of Agricultural Engineering och Plant Protection Ltd. Satec Multi-crop Seeder. [Silsoe, Eng.: National College of Agricultural Engineering], 1973.
MLA-referens (8:e uppl.)National College of Agricultural Engineering och Plant Protection Ltd. Satec Multi-crop Seeder. National College of Agricultural Engineering], 1973.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.