एपीए उद्धरण

Dubicka, I. (2003). English for international tourism: Pre-intermediate Workbook. Harlow, England: Pearson Education Limited.

शिकागो स्टाइल उद्धरण

Dubicka, Iwonna. English for International Tourism: Pre-intermediate Workbook. Harlow, England: Pearson Education Limited, 2003.

एमएलए उद्धरण

Dubicka, Iwonna. English for International Tourism: Pre-intermediate Workbook. Harlow, England: Pearson Education Limited, 2003.