Cita APA (7a ed.)

Hagen, E. A. (1844). Ueber Reiterstatuen . [s.n.].

Cita Chicago Style (17a ed.)

Hagen, Ernst August. Ueber Reiterstatuen . Königsberg: [s.n.], 1844.

Cita MLA (9a ed.)

Hagen, Ernst August. Ueber Reiterstatuen . [s.n.], 1844.