APA
Nazeer M.A, George P.J, Marattukalam J.G & Premakumari D. (1991). Evaluation of certain primary and secondary Hevea clones in large scale trial. : Placrosym VIII, 1988, Cochin, India. Journal of Plantation Crops, 18 (Supplement): 11-16.
Chicago
Nazeer M.A, George P.J, Marattukalam J.G and Premakumari D. 1991. Evaluation of certain primary and secondary Hevea clones in large scale trial. : Placrosym VIII, 1988, Cochin, India. Journal of Plantation Crops, 18 (Supplement): 11-16.
Harvard
Nazeer M.A, George P.J, Marattukalam J.G and Premakumari D. (1991). Evaluation of certain primary and secondary Hevea clones in large scale trial. : Placrosym VIII, 1988, Cochin, India. Journal of Plantation Crops, 18 (Supplement): 11-16.
MLA
Nazeer M.A, George P.J, Marattukalam J.G and Premakumari D. Evaluation of certain primary and secondary Hevea clones in large scale trial. : Placrosym VIII, 1988, Cochin, India. Journal of Plantation Crops, 18 (Supplement): 11-16. 1991.