APA
Yapa P A J, . (1976). Some aspects of phenolic discolouration in natural rubber. : Journal of the Rubber Research Institute of Sri Lanka.
Chicago
Yapa P A J, . 1976. Some aspects of phenolic discolouration in natural rubber. : Journal of the Rubber Research Institute of Sri Lanka.
Harvard
Yapa P A J, . (1976). Some aspects of phenolic discolouration in natural rubber. : Journal of the Rubber Research Institute of Sri Lanka.
MLA
Yapa P A J, . Some aspects of phenolic discolouration in natural rubber. : Journal of the Rubber Research Institute of Sri Lanka. 1976.