Não informado. Extension farm news. North Carolina Agricultural Extension Service.
Chicagoスタイル(17版)引用形式Não informado. Extension Farm News. Raleigh, NC: North Carolina Agricultural Extension Service.
MLA(8版)引用形式Não informado. Extension Farm News. North Carolina Agricultural Extension Service.
警告: この引用は必ずしも正確ではありません.