Dubicka, I., & O'Keeffe, M. (2003). English for international tourism: Pre-Intermediate students' book. England: Pearson.
シカゴスタイル引用形Dubicka, Iwonna, , Margaret O'Keeffe. English for International Tourism: Pre-Intermediate Students' Book. England: Pearson, 2003.
MLA引用形式Dubicka, Iwonna, , Margaret O'Keeffe. English for International Tourism: Pre-Intermediate Students' Book. England: Pearson, 2003.
警告: この引用は必ずしも正確ではありません.