Cox, I. W. The folly of human sterilization. Paulist Press.
Lua i Stíl Chicago (17ú heag.)Cox, Ignatius W. The Folly of Human Sterilization. New York: Paulist Press.
Lua MLA (8ú heag.)Cox, Ignatius W. The Folly of Human Sterilization. Paulist Press.
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