Hughes, J. (2004). Business focus: Pre-Intermediate (Teacher's book). Oxford: Oxford university press.
シカゴスタイル引用形Hughes, John. Business Focus: Pre-Intermediate (Teacher's Book). Oxford: Oxford university press, 2004.
MLA引用形式Hughes, John. Business Focus: Pre-Intermediate (Teacher's Book). Oxford: Oxford university press, 2004.
警告: この引用は必ずしも正確ではありません.