Longman. (1993). Language activator: The world's first production dictionary. Longman.
Chicagoスタイル(17版)引用形式Longman. Language Activator: The World's First Production Dictionary. Essex: Longman, 1993.
MLA(9版)引用形式Longman. Language Activator: The World's First Production Dictionary. Longman, 1993.
警告: この引用は必ずしも正確ではありません.