Cita APA (7a ed.)

Lortzing, A. (1847). Komische Opern. [s.n.].

Cita Chicago Style (17a ed.)

Lortzing, Albert. Komische Opern. Leipzig: [s.n.], 1847.

Cita MLA (9a ed.)

Lortzing, Albert. Komische Opern. [s.n.], 1847.