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 & Laughlin, H. H. (1914). 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.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)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 و 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.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)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 و 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.