APA
Karthikakuttyamma M, Aiyer R.S, George V, Prasannakumari P & Suresh P.R. (1998). Effect of continuous cultivation of rubber (Hevea brasiliensis) on morphological features and organic carbon, total nitrogen, phosphorous and potassium contents of soil. : Indian Journal of Natural Rubber Research.
Chicago
Karthikakuttyamma M, Aiyer R.S, George V, Prasannakumari P and Suresh P.R. 1998. Effect of continuous cultivation of rubber (Hevea brasiliensis) on morphological features and organic carbon, total nitrogen, phosphorous and potassium contents of soil. : Indian Journal of Natural Rubber Research.
Harvard
Karthikakuttyamma M, Aiyer R.S, George V, Prasannakumari P and Suresh P.R. (1998). Effect of continuous cultivation of rubber (Hevea brasiliensis) on morphological features and organic carbon, total nitrogen, phosphorous and potassium contents of soil. : Indian Journal of Natural Rubber Research.
MLA
Karthikakuttyamma M, Aiyer R.S, George V, Prasannakumari P and Suresh P.R. Effect of continuous cultivation of rubber (Hevea brasiliensis) on morphological features and organic carbon, total nitrogen, phosphorous and potassium contents of soil. : Indian Journal of Natural Rubber Research. 1998.