JOHANSSON, KG. The Harmonic Language of the Beatles. Svensk tidskrift för musikforskning / Swedish Journal of Music Research, [S. l.], v. 2, 1999. DOI: 10.58698/stm-sjm.v2.56393. Disponível em: https://publicera.kb.se/stm-sjm/article/view/56393. Acesso em: 16 dec. 2025.