Cita APA (7a ed.)

Haack, H. (1914). Geograhen-Kalender 1914. Justus Perther.

Cita Chicago Style (17a ed.)

Haack, Hermann. Geograhen-Kalender 1914. Gotha: Justus Perther, 1914.

Cita MLA (9a ed.)

Haack, Hermann. Geograhen-Kalender 1914. Justus Perther, 1914.