Pergamon Institute of English (Oxford). (1981). World language English. Pergamon Institute of English (Oxford) ; Pergamon Press.
Chicagoスタイル(17版)引用形式Pergamon Institute of English (Oxford). World Language English. Oxford, England : Elmsford, NY: Pergamon Institute of English (Oxford) ; Pergamon Press, 1981.
MLA(9版)引用形式Pergamon Institute of English (Oxford). World Language English. Pergamon Institute of English (Oxford) ; Pergamon Press, 1981.
警告: この引用は必ずしも正確ではありません.