Smend, F. (1962). Was bleibt?: Zu Friedrich Blumes Bach-Bild. Merseburger.
Cita Chicago (17th ed.)Smend, Friedrich. Was Bleibt?: Zu Friedrich Blumes Bach-Bild. Berlin: Merseburger, 1962.
Cita MLA (8th ed.)Smend, Friedrich. Was Bleibt?: Zu Friedrich Blumes Bach-Bild. Merseburger, 1962.
Atenció: Aquestes cites poden no estar 100% correctes.