APA (7th ed.) Citation

Sitt, H., & Ambrosio, W. (1924). Practical viola method. Carl Fischer.

Chicago Style (17th ed.) Citation

Sitt, Hans, and W.F Ambrosio. Practical Viola Method. New York: Carl Fischer, 1924.

MLA (9th ed.) Citation

Sitt, Hans, and W.F Ambrosio. Practical Viola Method. Carl Fischer, 1924.