APA (7th ed.) Citation

Colombo International School. English For Communication Examination Guide -1. Uni Walker Packaging Limited.

Chicago Style (17th ed.) Citation

Colombo International School. English For Communication Examination Guide -1. Sri Lanka: Uni Walker Packaging Limited.

MLA (9th ed.) Citation

Colombo International School. English For Communication Examination Guide -1. Uni Walker Packaging Limited.

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