Rationalist Peace Society & Robertson, J. M. (1913). Essays towards peace. Watts.
Lua i Stíl Chicago (17ú heag.)Rationalist Peace Society agus J. M. Robertson. Essays Towards Peace. London: Watts, 1913.
Lua MLA (8ú heag.)Rationalist Peace Society agus J. M. Robertson. Essays Towards Peace. Watts, 1913.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.