APA (7th ed.) Citation

Wörrlein, F. (2002). Beitrag zu Rio + 10 in der Region Hesselberg.

Chicago Style (17th ed.) Citation

Wörrlein, Friedrich. Beitrag Zu Rio + 10 in Der Region Hesselberg. 2002.

MLA (9th ed.) Citation

Wörrlein, Friedrich. Beitrag Zu Rio + 10 in Der Region Hesselberg. 2002.

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