APA
Wijesuriya Wasana, Munasinghe Chintha & Wanigatunga Nandani. (1997). Seasonal variation in yield of rubber. : Bulletin of the Rubber Research Institute of Sri Lanka.
Chicago
Wijesuriya Wasana, Munasinghe Chintha and Wanigatunga Nandani. 1997. Seasonal variation in yield of rubber. : Bulletin of the Rubber Research Institute of Sri Lanka.
Harvard
Wijesuriya Wasana, Munasinghe Chintha and Wanigatunga Nandani. (1997). Seasonal variation in yield of rubber. : Bulletin of the Rubber Research Institute of Sri Lanka.
MLA
Wijesuriya Wasana, Munasinghe Chintha and Wanigatunga Nandani. Seasonal variation in yield of rubber. : Bulletin of the Rubber Research Institute of Sri Lanka. 1997.
