(2002). Air pollution (2nd ed.). Spon.
Chicago Style (17th ed.) ZitazioaAir Pollution. 2nd ed. London: Spon, 2002.
MLA (9th ed.) ZitazioaAir Pollution. 2nd ed. Spon, 2002.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
(2002). Air pollution (2nd ed.). Spon.
Chicago Style (17th ed.) ZitazioaAir Pollution. 2nd ed. London: Spon, 2002.
MLA (9th ed.) ZitazioaAir Pollution. 2nd ed. Spon, 2002.