APA (7th ed.) Citation

Olechowski, G. (1916). Poland and Prussia. Petersen.

Chicago Style (17th ed.) Citation

Olechowski, Gustaw. Poland and Prussia. Copenhagen: Petersen, 1916.

MLA (9th ed.) Citation

Olechowski, Gustaw. Poland and Prussia. Petersen, 1916.

Warning: These citations may not always be 100% accurate.