APA (7th ed.) Zitazioa

Ewans, M. (1977). Janacek's tragic operas. Faber and Faber.

Chicago Style (17th ed.) Zitazioa

Ewans, Michael. Janacek's Tragic Operas. Londres: Faber and Faber, 1977.

MLA (9th ed.) Zitazioa

Ewans, Michael. Janacek's Tragic Operas. Faber and Faber, 1977.