APA
Silva C G, . (1969). Provisional classification of rubber soils of Ceylon and their relationship to Malayan soils. : Journal of the Rubber Research Institute of Malaya.
Chicago
Silva C G, . 1969. Provisional classification of rubber soils of Ceylon and their relationship to Malayan soils. : Journal of the Rubber Research Institute of Malaya.
Harvard
Silva C G, . (1969). Provisional classification of rubber soils of Ceylon and their relationship to Malayan soils. : Journal of the Rubber Research Institute of Malaya.
MLA
Silva C G, . Provisional classification of rubber soils of Ceylon and their relationship to Malayan soils. : Journal of the Rubber Research Institute of Malaya. 1969.