1.    Plant Transformation Using Agrobacterium tumefaciens. Retrieved on 8 November 2012 from http://www.nepadbiosafety.net/subjects/biotechnology/plant-transformation-agro​

2.    Artificial selection of plants by genetic engineering. Retrieved on 8 November 2012 from https://sites.google.com/site/sec4diligencegroup8/​

3.    Plant-derived Compounds in Immunotherapy. Retrieved on 8 November 2012 from http://www.egohabitat.com/pbl/method2.htm.

4.    Nitin Verma, M.C.Bansal, Vivek Kumar (2004). Protoplast Fusion Technology and Its Biotechnological Applications. Department of Paper Technology, Indian Institute of Technology, Roorkee, Saharanpur Campus, Saharanpur.

5.    David A. Evans(1983). Agricultural Applications of Plant Protoplast Fusion. Nature Biotechnology 1, 253 – 261.

6.    Protoplast production and somatic hybridization. Retrieved on 8 November 2012 from http://www.unimedia.fr/homepage/biotechno/soc98/socproto6.htm

7.    Stopping tomato ripening by antisense technology. Retrieved on 8 November 2012 from http://www.sciencecaffe.com/en/tue-2012-09-18-0902/stopping-tomato-ripening-antisense-technology.

8.   Examples of genetically modified crops.Retrieved on 15 November 2012 from http://www.bionetonline.org/english/content/ff_cont3.htm

9. Advantages and Disadvantages of Genetically Modified Rice.Retrieved on 14 November 2012 from http://voices.yahoo.com/advantages-disadvantages-genetically-modified-2064791.html?cat=22

10. Transgenic crop: An introduction and resource guide Retrieved on 15 November 2012 from 

​        http://cls.casa.colostate.edu/transgeniccrops/risks.html