López-Beltrán, C. Heredity old and new: French physicians and l'hérédité naturelle in early 19th century / Carlos López-Beltrán. Conference A Cultural History of Heredity II : 18th and 19th centuries.(2003).
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)López-Beltrán, Carlos. "Heredity Old and New: French Physicians and L'hérédité Naturelle in Early 19th Century / Carlos López-Beltrán." Conference A Cultural History of Heredity II : 18th and 19th Centuries.(2003) .
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)López-Beltrán, Carlos. "Heredity Old and New: French Physicians and L'hérédité Naturelle in Early 19th Century / Carlos López-Beltrán." Conference A Cultural History of Heredity II : 18th and 19th Centuries.(2003), .
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