I think when they say link to your sources, they mean when your sources are available online - like a scientific study or something.
To add to the drama, one publication has actually banned more than two links, which means that writers are not allowed to link to the sources if there are more than two of them!
All a bit bonkers. 😆
I'm not the only journalist who's had questions raised about interviews, because on Medium some editors seem to assume that we just copied it from somewhere. Nope!
No worries anyway.