Hansen, M. L. (1921). Welfare work in Iowa. State Historical Society of Iowa.
Lua i Stíl Chicago (17ú heag.)Hansen, Marcus Lee. Welfare Work in Iowa. Iowa City, Ia.: State Historical Society of Iowa, 1921.
Lua MLA (8ú heag.)Hansen, Marcus Lee. Welfare Work in Iowa. State Historical Society of Iowa, 1921.
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