Beethoven, L. v., & Brendel, A. (1968). Piano pieces: Klavierstucke. Wiener Urtext Edition.
芝加哥风格引文Beethoven, Ludwig van, 与 Alfred Brendel. Piano Pieces: Klavierstucke. Wien: Wiener Urtext Edition, 1968.
MLA引文Beethoven, Ludwig van, 与 Alfred Brendel. Piano Pieces: Klavierstucke. Wiener Urtext Edition, 1968.
警告：这些引文格式不一定是100％准确.