APA (7th ed.) Citation

Rupersingha,Harsha F. (2018). The Machine Postmarks of Sri Lanka (First.). Athour.

Chicago Style (17th ed.) Citation

Rupersingha,Harsha F. The Machine Postmarks of Sri Lanka. First. Colombo: Athour, 2018.

MLA (9th ed.) Citation

Rupersingha,Harsha F. The Machine Postmarks of Sri Lanka. First. Athour, 2018.

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