Seaman, M. (1999). A fourth arm: Some aspects of the British experience of special forces and irregular warfare during and after the Second World War. Bulletin du Comité international d'histoire de la Deuxième Guerre mondiale.

Seaman, Mark. "A Fourth Arm: Some Aspects of the British Experience of Special Forces and Irregular Warfare During and After the Second World War." Bulletin Du Comité International D'histoire De La Deuxième Guerre Mondiale 1999.

Seaman, Mark. "A Fourth Arm: Some Aspects of the British Experience of Special Forces and Irregular Warfare During and After the Second World War." Bulletin Du Comité International D'histoire De La Deuxième Guerre Mondiale, 1999.