User blog comment:Semanticdrifter/Understanding Trademark/@comment-220.246.211.42-20130711000608/@comment-4811793-20130711194253

That sounds like more of a copyright question, but the short answer is that if you infringe someone's IP rights a reference or attribution doesn't save the day (unless we are talking about something under the CC-BY-SA (or similar) license). It may make the rights holder less likely to complain, but it isn't a shield from liability.