APA
Soyza S, Yapa P A J & Yogaratnam N. (1994). Use of rubber factory effluent as a fertilizer for young Hevea plants. : Journal of the Rubber Research Institute of Sri Lanka.
Chicago
Soyza S, Yapa P A J and Yogaratnam N. 1994. Use of rubber factory effluent as a fertilizer for young Hevea plants. : Journal of the Rubber Research Institute of Sri Lanka.
Harvard
Soyza S, Yapa P A J and Yogaratnam N. (1994). Use of rubber factory effluent as a fertilizer for young Hevea plants. : Journal of the Rubber Research Institute of Sri Lanka.
MLA
Soyza S, Yapa P A J and Yogaratnam N. Use of rubber factory effluent as a fertilizer for young Hevea plants. : Journal of the Rubber Research Institute of Sri Lanka. 1994.