APA (7th ed.) Citation

Beethoven, L. v., Horn, A., & Peters, C. F. (1880). Symphonien. C. F. Peters.

Chicago Style (17th ed.) Citation

Beethoven, Ludwig van, August Horn, and C. F. Peters. Symphonien. Leipzig: C. F. Peters, 1880.

MLA (9th ed.) Citation

Beethoven, Ludwig van, et al. Symphonien. C. F. Peters, 1880.