APA (7th ed.) Citation

Gunawardana, S. (2008). O/L Science Grade 10 (New Syllabus): Biology.

Chicago Style (17th ed.) Citation

Gunawardana, Sagara. O/L Science Grade 10 (New Syllabus): Biology. 2008.

MLA (9th ed.) Citation

Gunawardana, Sagara. O/L Science Grade 10 (New Syllabus): Biology. 2008.

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