Creating an outline Question.

When creating an outline do you need to add the credits of the information sourse? Or leave it just in the main speach? Example below!

I. The rising usage of cell phones while driving.

     A. According to the National Highway Traffic Safety Administration, http://www.nhtsa.gov/Driving+Safe  /Distracted+Driving+at+Distraction.gov/Policy+Statement+and+Compiled+FAQs+on+Distracted+Driving

OR do I need to remove the (http://www-------)

Thanks for your comments.