APA (7th ed.) Citation

Olk, T., & Hartnuß, B. (2011). Handbuch Bürgerschaftliches Engagement. Beltz Juventa.

Chicago Style (17th ed.) Citation

Olk, Thomas, and Birger Hartnuß. Handbuch Bürgerschaftliches Engagement. Weinheim Basel: Beltz Juventa, 2011.

MLA (8th ed.) Citation

Olk, Thomas, and Birger Hartnuß. Handbuch Bürgerschaftliches Engagement. Beltz Juventa, 2011.

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