APA (7th ed.) Citation

Sievert, A. (1938). Klasse 6: Norddeutschland.

Chicago Style (17th ed.) Citation

Sievert, A. Klasse 6: Norddeutschland. 1938.

MLA (8th ed.) Citation

Sievert, A. Klasse 6: Norddeutschland. 1938.

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