Walsh, J. J. (1904). Audubon, the Naturalist. Records of the American Catholic Historical Society of Philadelphia. Volume XV. Pages 8-21. Philadelphia : American Catholic Historical Society of Philadelphia.
Chicago-referens (17:e uppl.)Walsh, James J. Audubon, the Naturalist. Records of the American Catholic Historical Society of Philadelphia. Volume XV. Pages 8-21. Philadelphia : American Catholic Historical Society of Philadelphia, 1904.
MLA-referens (8:e uppl.)Walsh, James J. Audubon, the Naturalist. Records of the American Catholic Historical Society of Philadelphia. Volume XV. Pages 8-21. Philadelphia : American Catholic Historical Society of Philadelphia, 1904.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.