APA-referens (7:e uppl.)

Waller, J. C. Poor old ancestors: The popularity of medical hereditarianism, 1770 - 1870 / John C. Waller. Conference A Cultural History of Heredity II : 18th and 19th centuries.(2003).

Chicago-referens (17:e uppl.)

Waller, John C. "Poor Old Ancestors: The Popularity of Medical Hereditarianism, 1770 - 1870 / John C. Waller." Conference A Cultural History of Heredity II : 18th and 19th Centuries.(2003) .

MLA-referens (8:e uppl.)

Waller, John C. "Poor Old Ancestors: The Popularity of Medical Hereditarianism, 1770 - 1870 / John C. Waller." Conference A Cultural History of Heredity II : 18th and 19th Centuries.(2003), .