APA (7th ed.) Citation

Piyadigamage & -. (2015). Supplementary Class Work book: - (2015.). Champika printers.

Chicago Style (17th ed.) Citation

Piyadigamage and -. Supplementary Class Work Book: -. 2015. Sri Lanka: Champika printers, 2015.

MLA (9th ed.) Citation

Piyadigamage and -. Supplementary Class Work Book: -. 2015. Champika printers, 2015.

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