Flick, L. F. (1913). Eugenics: A lecture by Lawrence F. Flick, M.D. Delivered in the Catholic Summer School Extension Course, Philadelphia, January 17, 1913. Philadelphia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Flick, Lawrence F. Eugenics: A Lecture by Lawrence F. Flick, M.D. Delivered in the Catholic Summer School Extension Course, Philadelphia, January 17, 1913. Philadelphia, 1913.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Flick, Lawrence F. Eugenics: A Lecture by Lawrence F. Flick, M.D. Delivered in the Catholic Summer School Extension Course, Philadelphia, January 17, 1913. Philadelphia, 1913.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.