Bridgman, H. A. Global air pollution problems for the 1990s. John Wiley and Sons.
Chicago Style aipamenaBridgman, Howard A. Global Air Pollution Problems for the 1990s. John Wiley and Sons.
MLA aipamenaBridgman, Howard A. Global Air Pollution Problems for the 1990s. John Wiley and Sons.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.