Παραπομπή APA

(1970). Nutrient removal and advanced waste treatment. Pittsburgh: Institute for Urban Policy and Aministration, University of Pittsburgh.

Παραπομπή Chicago Style

Nutrient Removal and Advanced Waste Treatment. Pittsburgh: Institute for Urban Policy and Aministration, University of Pittsburgh, 1970.

Παραπομπή MLA

Nutrient Removal and Advanced Waste Treatment. Pittsburgh: Institute for Urban Policy and Aministration, University of Pittsburgh, 1970.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.