APA (7th ed.) Citation

Curtis, E. (1950). A history of Ireland ([6th ed., rev.].). Methuen.

Chicago Style (17th ed.) Citation

Curtis, Edmund. A History of Ireland. [6th ed., rev.]. London: Methuen, 1950.

MLA (9th ed.) Citation

Curtis, Edmund. A History of Ireland. [6th ed., rev.]. Methuen, 1950.