APA (7th ed.) Citation

Perera.K.I. Learn Yourself English. Janaka.

Chicago Style (17th ed.) Citation

Perera.K.I. Learn Yourself English. Kaduwela: Janaka.

MLA (9th ed.) Citation

Perera.K.I. Learn Yourself English. Janaka.

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