Beethoven, L. v., & Kerst, F. (1904). Beethoven, as revealed in his own words: The man and the artist. Floating Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Beethoven, Ludwig van, و Friedrich Kerst. Beethoven, as Revealed in His Own Words: The Man and the Artist. [Auckland, New Zealand]: Floating Press, 1904.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Beethoven, Ludwig van, و Friedrich Kerst. Beethoven, as Revealed in His Own Words: The Man and the Artist. Floating Press, 1904.
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