APA aipamena

Rachlin, A., & Hellard, i. S. (1997). Beethoven. Campo das Letras.

Chicago Style aipamena

Rachlin, Ann, and il. Susan Hellard. Beethoven. Campo das Letras, 1997.

MLA aipamena

Rachlin, Ann, and il. Susan Hellard. Beethoven. Campo das Letras, 1997.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.