Treaties, States Parties and Commentaries
Treaties and Documents
Geneva Conventions of 1949 and Additional Protocols, and their Commentaries
Historical Treaties and Documents
Manual of the Laws of Naval War. Oxford, 9 August 1913.
Section II : On the armed force of belligerent states - Art. 4.
Art. 4. Vessels converted into war-ships must bear the exterior marks which distinguish the war-ships of their nationality.