Leo Jones. (2002). New progress to proficiency (teacher's book). Cambridge, UK: Cambridge Univ. Press.
シカゴスタイル引用形Leo Jones. New Progress to Proficiency (teacher's Book). Cambridge, UK: Cambridge Univ. Press, 2002.
MLA引用形式Leo Jones. New Progress to Proficiency (teacher's Book). Cambridge, UK: Cambridge Univ. Press, 2002.
警告: この引用は必ずしも正確ではありません.