APA
Premakumari D, Marattukalam J G & Panikkar A O N. (1985). Structure of the bark and clonal variability in Hevea brasiliensis (Willd. ex A. Juss.)Muell. Arg. : Annals of Botany.
Chicago
Premakumari D, Marattukalam J G and Panikkar A O N. 1985. Structure of the bark and clonal variability in Hevea brasiliensis (Willd. ex A. Juss.)Muell. Arg. : Annals of Botany.
Harvard
Premakumari D, Marattukalam J G and Panikkar A O N. (1985). Structure of the bark and clonal variability in Hevea brasiliensis (Willd. ex A. Juss.)Muell. Arg. : Annals of Botany.
MLA
Premakumari D, Marattukalam J G and Panikkar A O N. Structure of the bark and clonal variability in Hevea brasiliensis (Willd. ex A. Juss.)Muell. Arg. : Annals of Botany. 1985.