APA
Marattukalam J G, Saraswathyamma C K, . (1980). Hevea clones. : Handbook of Natural rubber production in India (Ed. P N Radhakrishna Pillay). Kottayam, RRII, 1980.
Chicago
Marattukalam J G, Saraswathyamma C K, . 1980. Hevea clones. : Handbook of Natural rubber production in India (Ed. P N Radhakrishna Pillay). Kottayam, RRII, 1980.
Harvard
Marattukalam J G, Saraswathyamma C K, . (1980). Hevea clones. : Handbook of Natural rubber production in India (Ed. P N Radhakrishna Pillay). Kottayam, RRII, 1980.
MLA
Marattukalam J G, Saraswathyamma C K, . Hevea clones. : Handbook of Natural rubber production in India (Ed. P N Radhakrishna Pillay). Kottayam, RRII, 1980. 1980.
