APA (7th ed.) Citation

Abeywickrama,A.M. (2014). English Grammar Patterns In A Progressive Way. S & S.

Chicago Style (17th ed.) Citation

Abeywickrama,A.M. English Grammar Patterns In A Progressive Way. Colombo: S & S, 2014.

MLA (9th ed.) Citation

Abeywickrama,A.M. English Grammar Patterns In A Progressive Way. S & S, 2014.

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