Cowper, A. (2013). English for international tourism: Upper Intermediate workbook. Harlow, England: Pearson Education Limited.
استشهاد بنمط شيكاغوCowper, Anna. English for International Tourism: Upper Intermediate Workbook. Harlow, England: Pearson Education Limited, 2013.
MLA استشهادCowper, Anna. English for International Tourism: Upper Intermediate Workbook. Harlow, England: Pearson Education Limited, 2013.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.