Youell, R. (1996). Travel and tourism: Optional units, advanced GNVQ. Harrow: Longman.
シカゴスタイル引用形Youell, Ray. Travel and Tourism: Optional Units, Advanced GNVQ. Harrow: Longman, 1996.
MLA引用形式Youell, Ray. Travel and Tourism: Optional Units, Advanced GNVQ. Harrow: Longman, 1996.
警告: この引用は必ずしも正確ではありません.