Cita APA (7a ed.)

Dufour, P. (1789). Korrespondent. Piotr Dufour.

Cita Chicago Style (17a ed.)

Dufour, Piotr. Korrespondent. [Warszawa: Piotr Dufour, 1789.

Cita MLA (9a ed.)

Dufour, Piotr. Korrespondent. Piotr Dufour, 1789.