APA (7th ed.) Citation

(1990). Umwelt-Survey. Umweltbundesamt.

Chicago Style (17th ed.) Citation

Umwelt-Survey. Berlin: Umweltbundesamt, 1990.

MLA (9th ed.) Citation

Umwelt-Survey. Umweltbundesamt, 1990.

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