SpringerLink (Online service), DeWalle, D. R., Hom, J. L., & Adams, M. B. The Fernow watershed acidification study.
Chicago Style aipamenaSpringerLink (Online service), David R. DeWalle, John L. Hom, and Mary Beth Adams. The Fernow Watershed Acidification Study.
MLA aipamenaSpringerLink (Online service), et al. The Fernow Watershed Acidification Study.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.