Tài liệu tham khảo WikiPedia: Al_Stewart http://www.alstewart.com http://www.appleseedrec.com/alstewart/index.html http://www.lasvegassun.com/news/2009/feb/18/heady-... http://www.vh1.com/artists/az/stewart_al/bio.jhtml //www.worldcat.org/oclc/51389150 http://books.google.co.uk/books?id=2gU4URxmuQ4C&pg... http://www.thetimes.co.uk/tto/arts/music/article24...
