1. Moore Allan F. ‘Gentle Giant's “Octopus”’. Philomusica On-line: Composition and Experimentation in British Rock: 1966–1976, 2007. www-3.unipv.it/britishrock1966-1976/pdf/mooreeng.pdf (accessed 3 May 2013).
2. Parsons Tony . ‘Is This Man a Prat?’ New Musical Express, 18 June 1977. www.queenonline.com/en/the-band/interviews/freddie-mercury-1/is-this-man-a-prat-/ (accessed 18 September 2014).
3. B5. ‘God Save the Queen’ (Instrumental)