What is the correct way to set the copyright for the printed version of OpenStreetMap?

Question

OpenStreetMap

Hello. Something I am completely confused with these licenses. In general, we made a small TravelGuide and used OpenStreetMap screenshots in it without modifications + used GraphHopper to build routes and, roughly speaking, also screened and used it in our travelguide, it will be distributed both in printed form and in e-books on Amazon. (kinde).
Here and here it is written about the license, from which I understood that I can use it without problems, but I have to indicate links to OSM and, it seems, to GrpahHopper somewhere in the book, but I don’t really understand what exactly I should write?

Answer 1

for openstreetmap.org tiles on the corner in the picture (both paper and electronic) link to openstreetmap.org
I can’t say anything about the generated routings of the graphhopper, knock on them.
on the site they only talk about api mostly.