Παραπομπή APA

(1994). Preliminary treatment for wastewater facilities. Alexandria, VA: Water Environment Federation.

Παραπομπή Chicago Style

Preliminary Treatment for Wastewater Facilities. Alexandria, VA: Water Environment Federation, 1994.

Παραπομπή MLA

Preliminary Treatment for Wastewater Facilities. Alexandria, VA: Water Environment Federation, 1994.

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