Etlinger, Sarah A., and Fausto Borém. “Beyond the Music: Rethinking Sgt. Pepper’s Lonely Hearts Club Band”. Per Musi, no. 30 (November 20, 2014): 1–10. Accessed May 2, 2024. https://periodicos.ufmg.br/index.php/permusi/article/view/38830.