APA (7th ed.) Citation

(2018). Directory of building services engineers - 2017/2018: : valued up to April 2019. The Institution of Engineers, Sri Lanka.

Chicago Style (17th ed.) Citation

Directory of Building Services Engineers - 2017/2018: : Valued Up to April 2019. Colombo: The Institution of Engineers, Sri Lanka, 2018.

MLA (9th ed.) Citation

Directory of Building Services Engineers - 2017/2018: : Valued Up to April 2019. The Institution of Engineers, Sri Lanka, 2018.

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