APA (7th ed.) Citation

Humpe, A., Gies, O., & Kalmer, S. So soll es bleiben.

Chicago Style (17th ed.) Citation

Humpe, Annette, Oliver Gies, and Stefan Kalmer. So Soll Es Bleiben.

MLA (9th ed.) Citation

Humpe, Annette, et al. So Soll Es Bleiben.

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