Cita APA (7a ed.)

Beurmann, E. (1844). Ueber Afghanistan. [s.n.].

Cita Chicago Style (17a ed.)

Beurmann, Eduard. Ueber Afghanistan. Darmstadt: [s.n.], 1844.

Cita MLA (9a ed.)

Beurmann, Eduard. Ueber Afghanistan. [s.n.], 1844.