Subramaniam,V.S. Mathematics Grade 9. Lanka book depot Colombo.
Chicago Style (17th ed.) CitationSubramaniam,V.S. Mathematics Grade 9. Colombo: Lanka book depot Colombo.
MLA (9th ed.) CitationSubramaniam,V.S. Mathematics Grade 9. Lanka book depot Colombo.
Warning: These citations may not always be 100% accurate.