APA (7th ed.) Citation

Perera, N., & Wettasinghe, S. A great joke. Lassana Printers & Publishers.

Chicago Style (17th ed.) Citation

Perera, Nimal, and Sybil Wettasinghe. A Great Joke. Wellampitiya: Lassana Printers & Publishers.

MLA (9th ed.) Citation

Perera, Nimal, and Sybil Wettasinghe. A Great Joke. Lassana Printers & Publishers.

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