Johnson, E. R. (1905). Insurance. American Academy of Political and Social Science.
Citazione stile Chigago Style (17a edizione)Johnson, Emory R. Insurance. Philadelphia: American Academy of Political and Social Science, 1905.
Citatione MLA (9a ed.)Johnson, Emory R. Insurance. American Academy of Political and Social Science, 1905.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.