Sathasivampillai, K., & De Silva, G. A. C. (1976). Farm business management in the dry zone of Sri Lanka: Based on farm record book maintenance during 1973/74. Division of Agricultural Economics, Farm Management and Statistics, Govt. Dept. of Agriculture.
Παραπομπή σε μορφή Chicago (17η εκδ.)Sathasivampillai, K., και G. A. C. De Silva. Farm Business Management in the Dry Zone of Sri Lanka: Based on Farm Record Book Maintenance During 1973/74. Peradeniya: Division of Agricultural Economics, Farm Management and Statistics, Govt. Dept. of Agriculture, 1976.
Παραπομπή σε μορφή MLA (8th εκδ.)Sathasivampillai, K., και G. A. C. De Silva. Farm Business Management in the Dry Zone of Sri Lanka: Based on Farm Record Book Maintenance During 1973/74. Division of Agricultural Economics, Farm Management and Statistics, Govt. Dept. of Agriculture, 1976.