- منوری، مسعود (1369) "بررسی اکولوژیک تالاب انزلی"، نشر گیلان، 105 ص.
-Bowen, Hiro (1979) “Environmental chemistry of the elements”, Academic Press, London, N.2. Toronto, 333p.
-Burger, Jak (1993) “Metals in avian feathers: Bioindicators of environmental pollution”, Rev. Environ, Toxicol, 5: 203-311.
-Calow, Piter (1998) “Handbook of ecotoxicology”, Imprint: oxford, Blackwell.
-Eens, Mikaeil (1999) “Great and Blue Tits as indicators of Heavy metal contamination in terrestrial Ecosystems”, Ecotoxicology and Environmental safety, 44: 81-85.
-Frederick van (1985) “Cormorant. In: Dictionary of Birds. T&A Dpoyser, Carlton”, pp.110
.
-Furness, Rose (1995) “Birds as monitors of environmental changes”, British Trust for ornithology, thetford, Norfold, UK. 342 P.
-Furness, Raha (1979) “Pollutant levels in the great Skua. Environmental Pollution”, Vol: 19, 261-268.
- Hernandez, Linda (1998) “Accumulation of heavy metals and as in wetland birds in the area around Donana National Park affected by the Aznalcollar toxic spill”, Journal of the Total Environment, 242: 293-308.
-Hutton, Math (1981) “Accumulation of heavy metals and Selenium in three seabird species from the United Kingdom”, Environmental Pollution. Ser.A, vol 26: 45-129.
-Kalisinska, Elizabet (2003) “Using the Mallard to biomonitor heavy metal contamination of wetlands in north-western Poland”, The Science of Total Environment.
-Method 7000 (1983) “U.S.Environment Protection Agency, Methods for chemical Analysis of water and waste”, EPA 600/4-79-0201.