Nick Ham. (1999). Longman essential activator (Workbook). Essex, UK: Longman.
シカゴスタイル引用形Nick Ham. Longman Essential Activator (Workbook). Essex, UK: Longman, 1999.
MLA引用形式Nick Ham. Longman Essential Activator (Workbook). Essex, UK: Longman, 1999.
警告: この引用は必ずしも正確ではありません.