Rick Astley. s.n.].
Chicago Style aipamenaRick Astley. [S.l: s.n.].
MLA aipamenaRick Astley. s.n.].
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
      Rick Astley. s.n.].
Chicago Style aipamenaRick Astley. [S.l: s.n.].
MLA aipamenaRick Astley. s.n.].