ankieta
| event website |
| invitation from organizer |
| newsletter from organizer |
| social media (Facebook) |
| invitation from exhibitors |
| recommand from friends |
| industry press (which? - please fill in "other") |
| daily press (which? - please fill in "other") |
| industry portals (which? - please fill in "other") |
| general portals (which? - please fill in "other") |
| newsletter from portal (which? - please fill in "other") |
