APA (7th ed.) Citation

Nirmala perera. (2016). science grade-7. Jeya book centre.

Chicago Style (17th ed.) Citation

Nirmala perera. Science Grade-7. Colombo: Jeya book centre, 2016.

MLA (9th ed.) Citation

Nirmala perera. Science Grade-7. Jeya book centre, 2016.

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