Gruenberg, E. (1919). Violin teaching and violin study rules and hints for teachers and students. Carls Fischer.
Citação do estilo Chicago (17ª ed.)Gruenberg, Eugene. Violin Teaching and Violin Study Rules and Hints for Teachers and Students. New York: Carls Fischer, 1919.
Citação MLA (9ª ed.)Gruenberg, Eugene. Violin Teaching and Violin Study Rules and Hints for Teachers and Students. Carls Fischer, 1919.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.