APA (7th ed.) Citation

Schreff, D., & Wilderer, P. A. (1998). Nitrogen removal in multi-stage wastewater treatment plants by using a modified post-denitrification system.

Chicago Style (17th ed.) Citation

Schreff, Dieter, and Peter A. Wilderer. Nitrogen Removal in Multi-stage Wastewater Treatment Plants by Using a Modified Post-denitrification System. 1998.

MLA (9th ed.) Citation

Schreff, Dieter, and Peter A. Wilderer. Nitrogen Removal in Multi-stage Wastewater Treatment Plants by Using a Modified Post-denitrification System. 1998.