I am assuming that the content is some statistics or infographics which u want to share with the audience but not create urself. In that case, this is good.
Inserting just text based urls doesnt make sense. In fact u will irritate ur users with that. I would not put the url at all rather then putting it in text format and then asking a user to manually copy paste url to chrome. Thats just bad UX and shows insecurity.
Also note - search engines understand ur content with links. So if u link out to sources which closely connect to what u are writing, it is more likely to help u. But dont link out to direct competitor. Example - Many sites link out to statistics as proof of research done. If i were writing an article on customer service i will link out to an infographic or proof of statistics. This further confirms to google that u are writing on XYZ Topic
basically - 3-10 internal links per posts and 1-3 external links to safe sites is what i would recommend.