Cox, I. W. (1934). What About Sterilization? Washington, D.C..
Lua i Stíl Chicago (17ú heag.)Cox, Ignatius W. What About Sterilization? Washington, D.C., 1934.
Lua MLA (8ú heag.)Cox, Ignatius W. What About Sterilization? Washington, D.C., 1934.
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