Harish Kumar. (2001). Environmental health hazards. Sarup & Sons.
Chicago Style aipamenaHarish Kumar. Environmental Health Hazards. New Delhi: Sarup & Sons, 2001.
MLA aipamenaHarish Kumar. Environmental Health Hazards. Sarup & Sons, 2001.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.