Smith, P. I. S. (1970). Industrial intelligence and espionage. Business Books.
シカゴスタイル引用形Smith, Paul I. Slee. Industrial Intelligence and Espionage. London: Business Books, 1970.
MLA引用形式Smith, Paul I. Slee. Industrial Intelligence and Espionage. Business Books, 1970.
警告: この引用は必ずしも正確ではありません.