APA (7th ed.) Citation

Everling, E. (1937). Luftverkehr. de Gruyter.

Chicago Style (17th ed.) Citation

Everling, Emil. Luftverkehr. Berlin [u.a.]: de Gruyter, 1937.

MLA (9th ed.) Citation

Everling, Emil. Luftverkehr. de Gruyter, 1937.

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