APA (7th ed.) Citation

Humberg, F. (1988). Arbeiter-Esperantisten in Thüringen.

Chicago Style (17th ed.) Citation

Humberg, Felix. Arbeiter-Esperantisten in Thüringen. 1988.

MLA (8th ed.) Citation

Humberg, Felix. Arbeiter-Esperantisten in Thüringen. 1988.

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