Cita APA (7a ed.)

(1887). Geographisches jahrbuch. Justus Perthes.

Cita Chicago Style (17a ed.)

Geographisches Jahrbuch. Gotha: Justus Perthes, 1887.

Cita MLA (9a ed.)

Geographisches Jahrbuch. Justus Perthes, 1887.