APA

Piston W., . (1941). Harmony. New York: W.,W.Norton.

Chicago

Piston Walter, . 1941. Harmony. New York: W.,W.Norton.

Harvard

Piston W., . (1941). Harmony. New York: W.,W.Norton.

MLA

Piston Walter, . Harmony. New York: W.,W.Norton. 1941.