No. You don't need to show your work. If I believe it's correct, and you believe it's correct, and Sinneed can reign in his juvenile desire to control things, then we don't need the added clutter  especially since it will likely stay there forever. And I really doubt that anyone is going to see the boilerplate and say, ah yes, I will find a source! Because after all, there are no sources. How could there be? Sony could tweak things and then whatever info is out there becomes irrelevant and out-of-date. Really guys, we need to exercise some common sense here. Nevermind the usual rules of sourcing. This article has different parameters, and that cannot be overlooked.