Nirmala Perera. (2016). 2016 New Syllabus Science Grade 11 Work Book Part 2. Jeya Book Centre.
Chicago Style (17th ed.) CitationNirmala Perera. 2016 New Syllabus Science Grade 11 Work Book Part 2. Colombo: Jeya Book Centre, 2016.
MLA (9th ed.) CitationNirmala Perera. 2016 New Syllabus Science Grade 11 Work Book Part 2. Jeya Book Centre, 2016.
Warning: These citations may not always be 100% accurate.