APA (7th ed.) Citation

Szymanowski, K., Pławner, P., & Witala, W. Violin & piano works. Dux.

Chicago Style (17th ed.) Citation

Szymanowski, Karol, Piotr Pławner, and Wojciech Witala. Violin & Piano Works. [S.l.]: Dux.

MLA (9th ed.) Citation

Szymanowski, Karol, et al. Violin & Piano Works. Dux.