Williams, I. (2002). Green light two: Student book. London: McGraw-Hill/ELT.
シカゴスタイル引用形Williams, Ivor. Green Light Two: Student Book. London: McGraw-Hill/ELT, 2002.
MLA引用形式Williams, Ivor. Green Light Two: Student Book. London: McGraw-Hill/ELT, 2002.
警告: この引用は必ずしも正確ではありません.