Tewatia, G. (2007). Earthworm ecology. DPH.
Chicago Style aipamenaTewatia, Gulshan. Earthworm Ecology. New Delhi: DPH, 2007.
MLA aipamenaTewatia, Gulshan. Earthworm Ecology. DPH, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
Tewatia, G. (2007). Earthworm ecology. DPH.
Chicago Style aipamenaTewatia, Gulshan. Earthworm Ecology. New Delhi: DPH, 2007.
MLA aipamenaTewatia, Gulshan. Earthworm Ecology. DPH, 2007.