Não informado. Extension Folder. North Carolina State College of Agriculture and Engineering, Agricultural Extension Service.
Chicagoスタイル(17版)引用形式Não informado. Extension Folder. Raleigh, NC: North Carolina State College of Agriculture and Engineering, Agricultural Extension Service.
MLA(8版)引用形式Não informado. Extension Folder. North Carolina State College of Agriculture and Engineering, Agricultural Extension Service.
警告: この引用は必ずしも正確ではありません.