Gautam,, . A. (1992). Aquatic environment. Ashish.
Chicago Style aipamenaGautam,, Ashutosh. Aquatic Environment. New Delhi: Ashish, 1992.
MLA aipamenaGautam,, Ashutosh. Aquatic Environment. Ashish, 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.