Cita APA (7a ed.)

Schilling & Co (Gdańsk). (1925). Fabrik photographischer Apparate. [s.n..

Cita Chicago Style (17a ed.)

Schilling & Co (Gdańsk). Fabrik Photographischer Apparate. Dresden: [s.n., 1925.

Cita MLA (9a ed.)

Schilling & Co (Gdańsk). Fabrik Photographischer Apparate. [s.n., 1925.