APA
Izumi K., Ranatunga A., . (1974). Environmental and Social Constraints on Paddy Production Under Existing Conditions. Agrarian Research & Training Institute: Colombo.
Chicago
Izumi K, Ranatunga A.S, . 1974. Environmental and Social Constraints on Paddy Production Under Existing Conditions. Agrarian Research & Training Institute: Colombo.
Harvard
Izumi K., Ranatunga A., . (1974). Environmental and Social Constraints on Paddy Production Under Existing Conditions. Agrarian Research & Training Institute: Colombo.
MLA
Izumi K, Ranatunga A.S, . Environmental and Social Constraints on Paddy Production Under Existing Conditions. Agrarian Research & Training Institute: Colombo. 1974.