APA-referens (7:e uppl.)

Sathasivampillai, K., & De Silva, G. A. C. (1976). Farm business management in the wet zone of Sri Lanka, 1973-1974. Division of Agricultural Economics, Farm Management, and Statistics, Govt. Dept. of Agriculture.

Chicago-referens (17:e uppl.)

Sathasivampillai, K., och G. A. C. De Silva. Farm Business Management in the Wet Zone of Sri Lanka, 1973-1974. Peradeniya: Division of Agricultural Economics, Farm Management, and Statistics, Govt. Dept. of Agriculture, 1976.

MLA-referens (8:e uppl.)

Sathasivampillai, K., och G. A. C. De Silva. Farm Business Management in the Wet Zone of Sri Lanka, 1973-1974. Division of Agricultural Economics, Farm Management, and Statistics, Govt. Dept. of Agriculture, 1976.