Cita APA (7a ed.)

Zobeley, F. (1972). Portrait of Beethoven: An illustred biography. Herder and Herder.

Cita Chicago Style (17a ed.)

Zobeley, Fritz. Portrait of Beethoven: An Illustred Biography. New York: Herder and Herder, 1972.

Cita MLA (8a ed.)

Zobeley, Fritz. Portrait of Beethoven: An Illustred Biography. Herder and Herder, 1972.