APA (7th ed.) Citation

A.Karunakarar. (2010). Physics Unit 4 G.C.E.(A/L). Lanka Book Depot pub.

Chicago Style (17th ed.) Citation

A.Karunakarar. Physics Unit 4 G.C.E.(A/L). Colombo: Lanka Book Depot pub, 2010.

MLA (9th ed.) Citation

A.Karunakarar. Physics Unit 4 G.C.E.(A/L). Lanka Book Depot pub, 2010.