Hill, R. (2008). The roar of the butterfies. London: HarperCollins.
Chicago Style aipamenaHill, Reginald. The Roar of the Butterfies. London: HarperCollins, 2008.
MLA aipamenaHill, Reginald. The Roar of the Butterfies. London: HarperCollins, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.