APA (7th ed.) Citation

Grotelüschen, W. (1935). Grenzland Nordschleswig. Beltz.

Chicago Style (17th ed.) Citation

Grotelüschen, Wilhelm. Grenzland Nordschleswig. Langensalza [u.a.]: Beltz, 1935.

MLA (8th ed.) Citation

Grotelüschen, Wilhelm. Grenzland Nordschleswig. Beltz, 1935.

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