APA (7th ed.) Citation

Yougenthiri Sugunthan. Science Part 1 Grade 11 ( English Mediam). Lanka Book Deport pub.

Chicago Style (17th ed.) Citation

Yougenthiri Sugunthan. Science Part 1 Grade 11 ( English Mediam). Colombo: Lanka Book Deport pub.

MLA (9th ed.) Citation

Yougenthiri Sugunthan. Science Part 1 Grade 11 ( English Mediam). Lanka Book Deport pub.

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