Owens, Thom. Review of Naturally by J.J. Cale. All Music Guide to the Blues: The Definitive Guide to the Blues (2003), edited by Vladimir Bogdanov, et al. p. 94.
jjcale.com
«Music». JJ Cale official website. Arkivert frå originalen 31. desember 2014. Henta 16. september 2018.