Moore, Allan (maio de 1995). «The So-Called 'Flattened Seventh' in Rock». Cambridge University Press. Popular Music. 14 (2): 185–201. ISSN0261-1430. doi:10.1017/s0261143000007431
Moore, Allan (maio de 1995). «The So-Called 'Flattened Seventh' in Rock». Cambridge University Press. Popular Music. 14 (2): 185–201. ISSN0261-1430. doi:10.1017/s0261143000007431