Não informado. Extension bulletin. Oregon Agricultural College Extension Service.
Chicagoスタイル(17版)引用形式Não informado. Extension Bulletin. Corvallis, Ore: Oregon Agricultural College Extension Service.
MLA(8版)引用形式Não informado. Extension Bulletin. Oregon Agricultural College Extension Service.
警告: この引用は必ずしも正確ではありません.