APA
George E S, Karthikakuttyamma M & Punnoose K I. (2006). Substitution of potassium with sodium as nutrient for the growth of rubber seedlings. : Natural Rubber Research.
Chicago
George E S, Karthikakuttyamma M and Punnoose K I. 2006. Substitution of potassium with sodium as nutrient for the growth of rubber seedlings. : Natural Rubber Research.
Harvard
George E S, Karthikakuttyamma M and Punnoose K I. (2006). Substitution of potassium with sodium as nutrient for the growth of rubber seedlings. : Natural Rubber Research.
MLA
George E S, Karthikakuttyamma M and Punnoose K I. Substitution of potassium with sodium as nutrient for the growth of rubber seedlings. : Natural Rubber Research. 2006.