APA (7th ed.) Citation

Einstein, A. (1947). Musica in the romantic era. W.W. Norton.

Chicago Style (17th ed.) Citation

Einstein, Alfred. Musica in the Romantic Era. Nueva York: W.W. Norton, 1947.

MLA (9th ed.) Citation

Einstein, Alfred. Musica in the Romantic Era. W.W. Norton, 1947.