APA (7th ed.) Citation

Piyadasa, G. R. (2003). New environmental studies: Book 3. Author.

Chicago Style (17th ed.) Citation

Piyadasa, Geraldine R. New Environmental Studies: Book 3. Colombo: Author, 2003.

MLA (9th ed.) Citation

Piyadasa, Geraldine R. New Environmental Studies: Book 3. Author, 2003.

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