HAYWARD, P. John Whiteoak (1999) Playing Ad Lib: Improvisatory Music in Australia 1836-1970, Sydney: Currency Press. Perfect Beat, [S. l.], v. 4, n. 4, p. 85–87, 2015. DOI: 10.1558/prbt.v4i4.28713. Disponível em: http://journal.equinoxpub.com/PB/article/view/16638. Acesso em: 8 dec. 2022.