Foster, G. (1950). Abrahan Lincoln An initial biography. Charles Acribner's Sons.
Lua i Stíl Chicago (17ú heag.)Foster, Genovive. Abrahan Lincoln An Initial Biography. Charles Acribner's Sons, 1950.
Lua MLA (9ú heag.)Foster, Genovive. Abrahan Lincoln An Initial Biography. Charles Acribner's Sons, 1950.
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