APA (7th ed.) Citation

Bernard de Silva. (1990). New Work Book Grade 06. Samayawardhana.

Chicago Style (17th ed.) Citation

Bernard de Silva. New Work Book Grade 06. Colombo: Samayawardhana, 1990.

MLA (9th ed.) Citation

Bernard de Silva. New Work Book Grade 06. Samayawardhana, 1990.

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