U.S. Environmental Protection Agency. Office of Research and Development. Environmental Regulations and Technology, Control of Pathogens and Vector Attraction in Sewage Sludge. Cincinnati, OH (USA): Center for Environmental Research Information (2003).
 H.W. McKinnon, Environmental Regulation and technology, control of pathogens and vector attraction in sewage sludge (Including Domestic Septage), U.S. Environmental Protection Agency/625/R-92/013, USA (2003).
 Board of Environmental Studies and Toxicology, Biosolids applied to land: Advancing standards and practices, National Academy Press-Washington, DC (2002).
 J. Prasatsrisupab, V. Sabua, S. Tammarate, M. Pumklom, P. Chaiwanakupt, S. Srithongtim, The effects of irradiated wastewater sludge cake on maize and environment. 17th WCSS,14-21,Symposium no.59, August 2002, Paper no.735,Thailand (2002).
 I. Mohammed, AL-Ghonaiem, A.S.S. Ibrahimand, A.A. Al-Salamah, Application of Gamma irradiation in treatment of waste activated sludge to obtain class a biosolids. Am. J. Env. Sci. 6(6) (2010) 500-504.
 G. Yehia, M. Galal, Recycling of Treated Sewage Sludge in Sustainable Agriculture. Arab J. Nuc. Sci. Appl. 45(2) (2012) 548-560.
 M.D. Kumar, Environmental Pollution and waste Management. M D Publications PVT LTD. New Delhi. (1998).
 ASTM, Standard practices for digestion of water samples for determination of metals by flame atomic absorption, graphite furnace atomic absorbtion, plasma emission spectroscopy or plasma mass spectrum, 11(1) (2007).
 EURO CHLOR Analytical, Determination of Mercury in liquids (2009).
 ISO 7251, Microbiology of food and animal feeding stuff- Detection and enumeration of presumptive Escherichia coli- Most probable number technique (2005).
 ISO 4831, Microbiology of food and animal feeding stuff- Horizontal method for the detection and enumeration of coliforms Most probable number technique, (2006).
 ISO 6579, Microbiology: General guidance on methods for the detection of Salmonella, (1993).
 ISO 6340, Water quality- Detection and enumeration of Salmonella, (1995).
 J.M. Solera, Manual of sampling and analysis of wastewater, GEA, University Miguel Hernandez, (2006).
 M. Pirsaheb, M.K. Sharifi, Survey of parasitic contamination of raw wastewater produced in Islamabad-e-Gharb and role of stabilization ponds in removing this contamination. Zahedan J. Res. Med. Sci. 13(5) (2011) 51.
 M.R. Ayres, M.D. Dunvan, Analysis of wastewater for use in agriculture- A lab manual of parasitological and bacteriological techniques, World Health Organization, Geneva, (1996).
 A.S. Lepeuple, G. Garel, M. Jovic, M.R. Roubin, Literature review on levels of pathogens and their abatement in sludges, soil and treated biowaste, Horizontal, EU (2004).
 M.J. Malakuti, Sustainable agriculture and increase performance by optimizing the use of fertilizers in Iran, Ministry of Agriculture, (2005).