APA (7th ed.) Citation

Beethoven, L. v., & Anderson, E. (1961). Letters. St. Martin's Press.

Chicago Style (17th ed.) Citation

Beethoven, Ludwig van, and Emily Anderson. Letters. New York: St. Martin's Press, 1961.

MLA (9th ed.) Citation

Beethoven, Ludwig van, and Emily Anderson. Letters. St. Martin's Press, 1961.