Kilder
Videor til "Radio" og "Fjernsyn" og "Tidslinie":
www.youtube.com/watch?v=NhPgUcjGQAw&feature=player_embedded
www.youtube.com/watch?v=A3-hU8t4wzg&feature=player_embedded
www.youtube.com/watch?v=C5z4Akiaq1M&feature=player_embedded
Tekstkilder: