APA (7th ed.) Citation

Beethoven, L. v., Aimard, P., & Harnoncourt, N. Piano concerto no. 5 in E flat major op. 73.

Chicago Style (17th ed.) Citation

Beethoven, Ludwig van, Pierre-Laurent Aimard, and Nikolaus Harnoncourt. Piano Concerto No. 5 in E Flat Major Op. 73.

MLA (9th ed.) Citation

Beethoven, Ludwig van, et al. Piano Concerto No. 5 in E Flat Major Op. 73.