Cita APA (7a ed.)

Simrock, K. (1868). Bonn. Festschrift. [s.n.].

Cita Chicago Style (17a ed.)

Simrock, Karl. Bonn. Festschrift. Bonn: [s.n.], 1868.

Cita MLA (9a ed.)

Simrock, Karl. Bonn. Festschrift. [s.n.], 1868.