APA (7th ed.) Citation

Siriwardana, D. Biology: Activity book for grade 11 public on par with the new syllabus. S and S printers.

Chicago Style (17th ed.) Citation

Siriwardana, Devika. Biology: Activity Book for Grade 11 Public on Par with the New Syllabus. Colombo: S and S printers.

MLA (9th ed.) Citation

Siriwardana, Devika. Biology: Activity Book for Grade 11 Public on Par with the New Syllabus. S and S printers.

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