Johnson, Ronald, 1935. “The Different Musics.” In The Different Musics. New York, NY: W.W. Norton, 1969.

Gizzi, Peter. “Decoration Day.” In Artificial Heart. Providence, RI: Burning Deck, 1998.

Rathert, Wolfgang. “Between the “Self” and the “World.” Remarks on the Development of the Art Song in the 20th Century: With a Commentary on the Art Songs by Sang-Geun Lee.” 이상근 연구, vol. 1 (2015): 7.

Spies, B., and W. Weyer. “‘Music is Life’ - the Influence of Transcendentalist Philosophy on Ives’s Concord Sonata.” TD: The Journal for Transdisciplinary Research in Southern Africa, vol. 3, No. 2 (2007): 239-278.

Simms, L.M. Review of Charles Ives and the American Mind, by Rosalie Sandra Perry. History: Reviews of New Books, vol. 3, no. 4 (1975): 87.

Crory, Neil. Charles Ives: Romanzo Di Central Park. Vol. 49, Opera Canada Publications, Toronto, 2008.

Smith, Gregg. “Charles Ives and His Music for Chorus.” The Choral Journal, vol. 15, no. 3 (1974): 17-20.

Hammel, Alice M. Review of Charles Ives: Variations on “America,” for Flute and Piano, by Daniel Dorff. American Music Teacher (2007): 99-100.

Lerman, Leo. 1974. “Up Front: Sounds: Charles Ives.” Vogue 164: 158.

Bumpass, Kathryn. “Book Reviews: Two Books about Charles Ives.” Music Library Association, Vol. 54, USA, 1998.