Citazione Stile APA (7a Edizione)

Keyser, E. (1919). The importance of Germans and Slavs for Western-Prussia. A. W. Kafemann.

Citazione stile Chigago Style (17a edizione)

Keyser, Erich. The Importance of Germans and Slavs for Western-Prussia. Danzig: A. W. Kafemann, 1919.

Citatione MLA (9a ed.)

Keyser, Erich. The Importance of Germans and Slavs for Western-Prussia. A. W. Kafemann, 1919.