References

                                                                                             Text Works Cited

Margulis, Lynn. 1998. Five kingdoms: An illustrated guide to the phyla of life on Earth. W.H. Freeman and Company, USA.

Rimmer, Roger S. 2007. Compendium of brassica diseases. The American Phytopathological Society, St. Paul, Minnesota, USA.

Kole, Chittaranjan. 2007. Genome mapping and molecular breeding in plants: Vegetables. Springer-Verlag Berline Heidelberg, Heidelberg, Germany.

Campbell N, Reece J, Urry L, Cain M, Wasserman S, Minorsky P, Jackson R.  2008.  Biology.  8th Edition.  Pearson Education, Inc. San Francisco, California, USA.   

Liptay, Albert. 2007. "Turnip." World Book Encyclopedia volume 19. World Book, Inc., Chicago, Illinois, USA.

Electronic Cites

Canadian Food Inspection Agency. 2002. The Biology of Brassica rapa L. <URL: www.inspection.gc.ca/english/plaveg/bio/dir/dir9902e.pdf >. Accessed 14 April, 2009.