Johnson, E. R. (1905). Insurance. American Academy of Political and Social Science.
Lua i Stíl Chicago (17ú heag.)Johnson, Emory R. Insurance. Philadelphia: American Academy of Political and Social Science, 1905.
Lua MLA (9ú heag.)Johnson, Emory R. Insurance. American Academy of Political and Social Science, 1905.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.