Lonergan, W. I. (1927). Eugenics: Problems of sex. America Press.
Lua i Stíl Chicago (17ú heag.)Lonergan, William I. Eugenics: Problems of Sex. New York: America Press, 1927.
Lua MLA (8ú heag.)Lonergan, William I. Eugenics: Problems of Sex. America Press, 1927.
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