APA (7th ed.) Citation

Keerthisinghe, P. (2015). English for Technology 1. Published by author.

Chicago Style (17th ed.) Citation

Keerthisinghe, P.I. English for Technology 1. Galle: Published by author, 2015.

MLA (9th ed.) Citation

Keerthisinghe, P.I. English for Technology 1. Published by author, 2015.