APA (7th ed.) Zitazioa
ebrary, Inc. (2004). Air quality management in the United States. National Academies Press.
Chicago Style (17th ed.) Zitazioa
ebrary, Inc. Air Quality Management in the United States. Washington, DC ; [Great Britian]: National Academies Press, 2004.
MLA (9th ed.) Zitazioa
ebrary, Inc. Air Quality Management in the United States. National Academies Press, 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.