Reference
Janick, J. (n.d.) The Pear in history, Literature, Poplar Culture, and Art. Retrieved from http://www.hort.purdue.edu/newcrop/pearinhistory.pdf
Watson, M. (2012) Guide to Pear Varieties. Retrieved from http://localfoods.about.com/od/pears/ss/Pear-Varieties.htm
Produce Oasis (2012) Pears. Retrieved from http://www.produceoasis.com/Hierarchy_Folder/MainFruits_folder/L2fruits_folder/Pears.html
