Koch, R. S. (2006). Focus on grammar: An integrated skills approach. New York, NY: Pearson/Longman.
シカゴスタイル引用形Koch, Rachel Spack. Focus On Grammar: An Integrated Skills Approach. New York, NY: Pearson/Longman, 2006.
MLA引用形式Koch, Rachel Spack. Focus On Grammar: An Integrated Skills Approach. New York, NY: Pearson/Longman, 2006.
警告: この引用は必ずしも正確ではありません.