APA (7th ed.) Citation

(1978). Sri Lanka post office telephone directory. The Postmaster General and Director of Telecommunications.

Chicago Style (17th ed.) Citation

Sri Lanka Post Office Telephone Directory. Colombo: The Postmaster General and Director of Telecommunications, 1978.

MLA (9th ed.) Citation

Sri Lanka Post Office Telephone Directory. The Postmaster General and Director of Telecommunications, 1978.

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