CROWDY, D.; EVANS, M. Introduction. Perfect Beat, [S. l.], v. 11, n. 2, p. 99–101, 2011. DOI: 10.1558/prbt.v11i2.99. Disponível em: http://journal.equinoxpub.com/PB/article/view/16487. Acesso em: 20 mar. 2023.