Krenek, E. (1940). Studies in Counterpoint: Based on the twelve-tone technique / by Ernst Krenek. Schirmer.
Chicago-viite (17. p.)Krenek, Ernst. Studies in Counterpoint: Based on the Twelve-tone Technique / by Ernst Krenek. New York: Schirmer, 1940.
MLA-viite (8. p.)Krenek, Ernst. Studies in Counterpoint: Based on the Twelve-tone Technique / by Ernst Krenek. Schirmer, 1940.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.