Dummett, P., Hughes, J., & Stephenson, H. Life: Pre- intermediate student's book with online workbook. Singapore.
シカゴスタイル引用形Dummett, Paul, John Hughes, , Helen Stephenson. Life: Pre- Intermediate Student's Book With Online Workbook. Singapore.
MLA引用形式Dummett, Paul, John Hughes, , Helen Stephenson. Life: Pre- Intermediate Student's Book With Online Workbook. Singapore.
警告: この引用は必ずしも正確ではありません.