APA (7th ed.) Citation

(1978). Sri Lanka year book 1977. Department of Census and Statistics.

Chicago Style (17th ed.) Citation

Sri Lanka Year Book 1977. Colombo: Department of Census and Statistics, 1978.

MLA (9th ed.) Citation

Sri Lanka Year Book 1977. Department of Census and Statistics, 1978.

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