Iwonna Dubicka (4 knihy)
- Iwonna Dubicka, Marjorie Rosenberg, Bob Dignen, Mike Hogan, Lizzie Wright Business Partner B2+ Coursebook Detail
- Iwonna Dubicka Business Partner C1 Detail
- Iwonna Dubicka, Margaret O'Keeffe English for International Tourism - Pre-Intermediate - Student's Book EN Detail
- Iwonna Dubicka, Margaret O'Keeffe Market Leader - Advanced - Business English Course Book EN Detail