APA (7th ed.) Citation

Freystein, K., Reisser, W., & Salisch, M. Algal biofilms on tree bark to monitor airborne pollutants.

Chicago Style (17th ed.) Citation

Freystein, Katharina, Werner Reisser, and Mario Salisch. Algal Biofilms on Tree Bark to Monitor Airborne Pollutants.

MLA (9th ed.) Citation

Freystein, Katharina, et al. Algal Biofilms on Tree Bark to Monitor Airborne Pollutants.

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