Cita APA (7a ed.)

Gubitz, F. W. (1816). Schriften. [s.n.].

Cita Chicago Style (17a ed.)

Gubitz, Friedrich Wilhelm. Schriften. Berlin: [s.n.], 1816.

Cita MLA (9a ed.)

Gubitz, Friedrich Wilhelm. Schriften. [s.n.], 1816.