Reference
Unite States International Trade Commission. (February, 2010). Apples – Industry And Trade Summary. Retrived from http://www.usitc.gov/publications/332/ITS_4.pdf
Agriculture and Agri-Food Canada. (2008, May 27). Agri-Food Trade Service – Canadian Apple Industry. Retrived from http://www.ats-sea.agr.gc.ca/can/4480000-eng.htm.
