APA
Suresh P R, Karthikakuttyamma M, Mathew M & Narayanasamy G. (1994). Comparison of available phosphorus extractants in acid soil. : Indian Journal of Natural Rubber Research.
Chicago
Suresh P R, Karthikakuttyamma M, Mathew M and Narayanasamy G. 1994. Comparison of available phosphorus extractants in acid soil. : Indian Journal of Natural Rubber Research.
Harvard
Suresh P R, Karthikakuttyamma M, Mathew M and Narayanasamy G. (1994). Comparison of available phosphorus extractants in acid soil. : Indian Journal of Natural Rubber Research.
MLA
Suresh P R, Karthikakuttyamma M, Mathew M and Narayanasamy G. Comparison of available phosphorus extractants in acid soil. : Indian Journal of Natural Rubber Research. 1994.