एपीए उद्धरण

Dubicka, I. (2013). English for international tourism: Pre-Intermediate coursebook. Harlow, England: Pearson Education Limited.

शिकागो स्टाइल उद्धरण

Dubicka, Iwonna. English for International Tourism: Pre-Intermediate Coursebook. Harlow, England: Pearson Education Limited, 2013.

एमएलए उद्धरण

Dubicka, Iwonna. English for International Tourism: Pre-Intermediate Coursebook. Harlow, England: Pearson Education Limited, 2013.