Cita APA (7th ed.)

Hoffmann, R. (1946). Dunkler Engel (o.A.). Paul List verlag.

Cita Chicago (17th ed.)

Hoffmann, Ruth. Dunkler Engel. o.A. Leipzig: Paul List verlag, 1946.

Cita MLA (8th ed.)

Hoffmann, Ruth. Dunkler Engel. o.A. Paul List verlag, 1946.

Atenció: Aquestes cites poden no estar 100% correctes.