APA (7th ed.) Citation

Pesnot, P. (2016). Great spies of the 20th century. Pen & Sword Military, an imprint of Pen & Sword Books Ltd.

Chicago Style (17th ed.) Citation

Pesnot, Patrick. Great Spies of the 20th Century. Barnsley, South Yorkshire: Pen & Sword Military, an imprint of Pen & Sword Books Ltd, 2016.

MLA (9th ed.) Citation

Pesnot, Patrick. Great Spies of the 20th Century. Pen & Sword Military, an imprint of Pen & Sword Books Ltd, 2016.