Johnson, E. R. (1905). Insurance. American Academy of Political and Social Science.
Chicago-viite (17. p.)Johnson, Emory R. Insurance. Philadelphia: American Academy of Political and Social Science, 1905.
MLA-viite (9. p.)Johnson, Emory R. Insurance. American Academy of Political and Social Science, 1905.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.