De, A. K. (1994). Enviornmental chemistry (3rd ed.). New age Int..
Chicago Style aipamenaDe, A K. Enviornmental Chemistry. 3rd ed. New Delhi: New age Int., 1994.
MLA aipamenaDe, A K. Enviornmental Chemistry. 3rd ed. New age Int., 1994.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.