John, E. (1994). Ballads. Hal Leonard.
Chicago Style aipamenaJohn, Elton. Ballads. Milwaukee: Hal Leonard, 1994.
MLA aipamenaJohn, Elton. Ballads. Hal Leonard, 1994.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
John, E. (1994). Ballads. Hal Leonard.
Chicago Style aipamenaJohn, Elton. Ballads. Milwaukee: Hal Leonard, 1994.
MLA aipamenaJohn, Elton. Ballads. Hal Leonard, 1994.