Little, J., & Yelich-O'connor, E. (2013). Royals. EMI Music Publishing.
Lua i Stíl Chicago (17ú heag.)Little, Joel, agus Ella Yelich-O'connor. Royals. London: EMI Music Publishing, 2013.
Lua MLA (9ú heag.)Little, Joel, agus Ella Yelich-O'connor. Royals. EMI Music Publishing, 2013.
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