Não informado. (1969). Social sciences citation index. Institute for Scientific Information.
Chicagoスタイル(17版)引用形式Não informado. Social Sciences Citation Index. Philadelphia, Pa: Institute for Scientific Information, 1969.
MLA(8版)引用形式Não informado. Social Sciences Citation Index. Institute for Scientific Information, 1969.
警告: この引用は必ずしも正確ではありません.