Não informado. (1970). Extension news. Virginia Polytechnic Institute and State University.
Chicagoスタイル(17版)引用形式Não informado. Extension News. Blacksburg, Va: Virginia Polytechnic Institute and State University, 1970.
MLA(8版)引用形式Não informado. Extension News. Virginia Polytechnic Institute and State University, 1970.
警告: この引用は必ずしも正確ではありません.