Cita APA (7th ed.)
Cowell, H., & Cowell, S. (1955). Charles Ives and his music: By Henry Cowell and Sidney Cowell. Oxford Univ. Pr.
Cita Chicago (17th ed.)
Cowell, Henry, i Sidney Cowell. Charles Ives and His Music: By Henry Cowell and Sidney Cowell. New York: Oxford Univ. Pr, 1955.
Cita MLA (9th ed.)
Cowell, Henry, i Sidney Cowell. Charles Ives and His Music: By Henry Cowell and Sidney Cowell. Oxford Univ. Pr, 1955.
Atenció: Aquestes cites poden no estar 100% correctes.