Porter, T. M. The Biometric Sense of Heredity: Statistics, Pangenesis and Postivism / Theodore M. Porter. Conference A Cultural History of Heredity III : 19th and early 20th centuries.(2005).

Porter, Theodore M. "The Biometric Sense of Heredity: Statistics, Pangenesis and Postivism / Theodore M. Porter." Conference A Cultural History of Heredity III : 19th and Early 20th Centuries.(2005) .

Porter, Theodore M. "The Biometric Sense of Heredity: Statistics, Pangenesis and Postivism / Theodore M. Porter." Conference A Cultural History of Heredity III : 19th and Early 20th Centuries.(2005), .