Friedensburg, F., & Gray, L. H. (1911). The practical results of workingmen's insurance in Germany. The Workmen's compensation service and information bureau].
Lua i Stíl Chicago (17ú heag.)Friedensburg, F., agus Louis H. Gray. The Practical Results of Workingmen's Insurance in Germany. [New York city: The Workmen's compensation service and information bureau], 1911.
Lua MLA (8ú heag.)Friedensburg, F., agus Louis H. Gray. The Practical Results of Workingmen's Insurance in Germany. The Workmen's compensation service and information bureau], 1911.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.