APA (7th ed.) Citation

De Silva, J. W., & De Silva, R. (1975). English for science and technology. M.D.Gunasena.

Chicago Style (17th ed.) Citation

De Silva, J. W., and Rienzie De Silva. English for Science and Technology. Colombo: M.D.Gunasena, 1975.

MLA (9th ed.) Citation

De Silva, J. W., and Rienzie De Silva. English for Science and Technology. M.D.Gunasena, 1975.

Warning: These citations may not always be 100% accurate.