Cita APA (7a ed.)

Kühne, G. (1838). Raoul. [s.n.].

Cita Chicago Style (17a ed.)

Kühne, Gustav. Raoul. Leipzig: [s.n.], 1838.

Cita MLA (9a ed.)

Kühne, Gustav. Raoul. [s.n.], 1838.