Simandl, F., & Zimmermann, F. (1957). Gradus ad parnassum: 24 studies for string bass. International Music.
Chicago Style (17th ed.) CitationSimandl, Franz, and Fred Zimmermann. Gradus Ad Parnassum: 24 Studies for String Bass. New York: International Music, 1957.
MLA (9th ed.) CitationSimandl, Franz, and Fred Zimmermann. Gradus Ad Parnassum: 24 Studies for String Bass. International Music, 1957.
Warning: These citations may not always be 100% accurate.