(1970). Pollution Probe. Toronto: New Press.
Chicago Style aipamenaPollution Probe. Toronto: New Press, 1970.
MLA aipamenaPollution Probe. Toronto: New Press, 1970.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
(1970). Pollution Probe. Toronto: New Press.
Chicago Style aipamenaPollution Probe. Toronto: New Press, 1970.
MLA aipamenaPollution Probe. Toronto: New Press, 1970.