Não informado. (1920). Agricultural Engineering. American Society of Agricultural Engineers.
Cita Chicago Style (17a ed.)Não informado. Agricultural Engineering. St. Joseph, Mich: American Society of Agricultural Engineers, 1920.
Cita MLA (8a ed.)Não informado. Agricultural Engineering. American Society of Agricultural Engineers, 1920.
Precaución: Estas citas no son 100% exactas.