APA
Nugawela A, . (1998). How and why the intake of a tapper should be increased. : Bulletin of the Rubber Research Institute of Sri Lanka.
Chicago
Nugawela A, . 1998. How and why the intake of a tapper should be increased. : Bulletin of the Rubber Research Institute of Sri Lanka.
Harvard
Nugawela A, . (1998). How and why the intake of a tapper should be increased. : Bulletin of the Rubber Research Institute of Sri Lanka.
MLA
Nugawela A, . How and why the intake of a tapper should be increased. : Bulletin of the Rubber Research Institute of Sri Lanka. 1998.