APA (7th ed.) Citation

Doherty, R. (2004). The thin green line: A history of the Royal Ulster Constabulary GC, 1922 - 2001. Pen & Sword Military.

Chicago Style (17th ed.) Citation

Doherty, Richard. The Thin Green Line: A History of the Royal Ulster Constabulary GC, 1922 - 2001. Barnsley, South Yorkshire: Pen & Sword Military, 2004.

MLA (8th ed.) Citation

Doherty, Richard. The Thin Green Line: A History of the Royal Ulster Constabulary GC, 1922 - 2001. Pen & Sword Military, 2004.

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