APA (7th ed.) Citation

Elson, L. C. (1925). The History of American music. Macmillan.

Chicago Style (17th ed.) Citation

Elson, Louis Charles. The History of American Music. New York: Macmillan, 1925.

MLA (9th ed.) Citation

Elson, Louis Charles. The History of American Music. Macmillan, 1925.