Yates, C. S. (1992). May I Help You?: (English in Tourism). New York: Prentice-Hall.
シカゴスタイル引用形Yates, Christopher St.j. May I Help You?: (English in Tourism). New York: Prentice-Hall, 1992.
MLA引用形式Yates, Christopher St.j. May I Help You?: (English in Tourism). New York: Prentice-Hall, 1992.
警告: この引用は必ずしも正確ではありません.