APA (7th ed.) Citation

Oertzen, F. W. v., & Clark, R. T. (1932). So this is Poland. G. Allen & Unwin, ltd..

Chicago Style (17th ed.) Citation

Oertzen, F. W. von, and R. T. Clark. So This Is Poland. London: G. Allen & Unwin, ltd., 1932.

MLA (9th ed.) Citation

Oertzen, F. W. von, and R. T. Clark. So This Is Poland. G. Allen & Unwin, ltd., 1932.

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