Snyder, L. L. (1977). Historic documents of World War I. Greenwood Press.
Lua i Stíl Chicago (17ú heag.)Snyder, Louis Leo. Historic Documents of World War I. Westport, Conn: Greenwood Press, 1977.
Lua MLA (9ú heag.)Snyder, Louis Leo. Historic Documents of World War I. Greenwood Press, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.