Citazione Stile APA (7a Edizione)

(1987). Actived sludge: Manual of practice. Water Environment Federation.

Citazione stile Chigago Style (17a edizione)

Actived Sludge: Manual of Practice. Alexandría: Water Environment Federation, 1987.

Citatione MLA (9a ed.)

Actived Sludge: Manual of Practice. Water Environment Federation, 1987.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.