Cita APA (7a ed.)

Dubicka, I., & O'Keeffe, M. (2010). English for international Tourism: Pre-intermediante worbook (1st ed., 9th reimpr.). Pearson.

Cita Chicago Style (17a ed.)

Dubicka, Iwonna, y Margaret O'Keeffe. English for International Tourism: Pre-intermediante Worbook. 1st ed., 9th reimpr. Essex: Pearson, 2010.

Cita MLA (8a ed.)

Dubicka, Iwonna, y Margaret O'Keeffe. English for International Tourism: Pre-intermediante Worbook. 1st ed., 9th reimpr. Pearson, 2010.