Cita APA (7a ed.)

Duller, E. (1832). Berthold Schwarz. [s.n.].

Cita Chicago Style (17a ed.)

Duller, Eduard. Berthold Schwarz. Stuttgart: [s.n.], 1832.

Cita MLA (9a ed.)

Duller, Eduard. Berthold Schwarz. [s.n.], 1832.