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Lua i Stíl Chicago (17ú heag.)Cold Spring Harbor (N.Y.). Eugenics Record Office. Committee to study and to report on the best practical means of cutting off the defective germ-plasm in the American population agus Harry Hamilton Laughlin. Report of the Committee to Study and to Report on the Best Practical Means of Cutting off the Defective Germ-plasm in the American Population. Cold Spring Harbor, N.Y, 1914.
Lua MLA (8ú heag.)Cold Spring Harbor (N.Y.). Eugenics Record Office. Committee to study and to report on the best practical means of cutting off the defective germ-plasm in the American population agus Harry Hamilton Laughlin. Report of the Committee to Study and to Report on the Best Practical Means of Cutting off the Defective Germ-plasm in the American Population. 1914.