Robert Sendek · S R · S. Robert
| title | ISBN-13 | year of publication |
|---|---|---|
| Bulgaria Pejzaz sloncem pisany | 978-83-283-0185-6 | 2015 |
| Bulgaria Pejzaz sloncem pisany Przewodnik | 978-83-7661-122-8 | 2011 |
| Wybrzeze Bulgarii | 978-83-246-4911-2 | 2011 |
| Wybrzeze Bulgarii | 978-83-7661-139-6 | 2011 |
| Wybrzeze Bulgarii i Rumunii | 978-83-7661-129-7 | 2011 |
| Wybrzeze Bulgarii Travelbook W 1 | 978-83-246-8522-6 | 2014 |