1. CORNISH, K. (2001) Biochemistry of natural rubber, a vital raw material, emphasizing biosynthetic rate, molecular weight and compartmentalization, in evolutionarily divergent plant species. Nat. Prod. Reports, 18(2), 182–189.
2. WHALEN, M., MCMAHAN, C. AND SHINTANI, D. (2013) Development of Crops to Produce Industrially Useful Natural Rubber In. BACH, I.J. and ROHMER, M. (Eds) Isoprenoid Synthesis in Plants and Microorganisms. New York: Springer, 329–345
3. AGWU, A.E. (2006) Enhancing Natural Rubber (Hevea brasiliensis) Production through Extension Service Delivery in South West Agricultural Zone of Nigeria. J. Agri. Food Environ. Exten., 5(2), 7–16.
4. Natural Rubber Statistics (2016) Retrieved September 23, 2016 from
https://doi.org/www.lgm.gov.my
/nrstat/nrstats.pdf.
5. IRSG. Retrieved July 1, 2016 from
https://doi.org/www.rubberstudy.com
/news-article.aspx?id=5101&b=default.aspx.