Não informado. (1972). Agricultural engineer. Institution of Agricultural Engineers.
Chicagoスタイル(17版)引用形式Não informado. Agricultural Engineer. Bedford, Inglaterra: Institution of Agricultural Engineers, 1972.
MLA(8版)引用形式Não informado. Agricultural Engineer. Institution of Agricultural Engineers, 1972.
警告: この引用は必ずしも正確ではありません.