Wood, R. J. The sheep breeder's view of heredity (1723 - 1843): Roger J. Wood. Conference A Cultural History of Heredity II : 18th and 19th centuries.(2003).
Chicago-referens (17:e uppl.)Wood, Roger J. "The Sheep Breeder's View of Heredity (1723 - 1843): Roger J. Wood." Conference A Cultural History of Heredity II : 18th and 19th Centuries.(2003) .
MLA-referens (8:e uppl.)Wood, Roger J. "The Sheep Breeder's View of Heredity (1723 - 1843): Roger J. Wood." Conference A Cultural History of Heredity II : 18th and 19th Centuries.(2003), .
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.