APA (7th ed.) Citation

Ranasinghe, S. Biology For Ordinary Level. Samudra Book Publication.

Chicago Style (17th ed.) Citation

Ranasinghe, Shirani. Biology For Ordinary Level. Kurunegala: Samudra Book Publication.

MLA (9th ed.) Citation

Ranasinghe, Shirani. Biology For Ordinary Level. Samudra Book Publication.

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