Here are All Of this for you from RCA-sessions:
https://www.youtube.com/watch?v=60QApbDG4PE
I think this version is better than later single-version (Curtis vocals are much more aggressive & greater)
https://www.youtube.com/watch?v=ipBURvpouYY
There is wrong information in that youtube-piece, they were already Joy Division when making those RCA-sessions.