Behrend, W. (1918). Niels W. Gade: Von William Behrend. Breitkopf & Härtel.
Cita Chicago (17th ed.)Behrend, William. Niels W. Gade: Von William Behrend. Leipzig: Breitkopf & Härtel, 1918.
Cita MLA (8th ed.)Behrend, William. Niels W. Gade: Von William Behrend. Breitkopf & Härtel, 1918.
Atenció: Aquestes cites poden no estar 100% correctes.