http://gado2indonesia.blogspot.com/2009/04/gaya-bahasa-dalam-lirik-lagu-lagu-ungu.html
https://docs.google.com/viewer?a=v&q=cache:k7yLzi2B7dkJ:eprints.undip.ac.id/19452/3/BAB_III.pdf+Ketidak+langsungan+ekspresi+