I have references (journal articles, conferences...) but I have added some web pages, sites etc. Once I do that like in this link (and here I would like to thank who have helped me to do so correctly) I get something a bit strange that I did not have before. Each one of my references (even those which are not web pages) appear in squares. I am worried about that because I don't know ehether I get that on paper when I print my thesis document! Do they appear in impression? How to delete these green squares on my text and the blue on my page web references??
For the next time, please provide a working minimal example.
However, those boxes come from the hyperref package. Loading it as
should solve your problem.
And for the record: Those which are no hyperlinks are document-internal links, in this case from your citations to your reference list. That's why they have different colours.