Geiger 2009, p. 18. Geiger, Mark (February 2009). "Indebtedness and the Origins of Guerrilla Violence in Civil War Missouri". The Journal of Southern History. 75 (1). Southern Historical Association: 49–82. JSTOR27650402.
Wood 2003, pp. xi & viii; Geiger 2009, p. 1. Wood, Larry (2003). The Civil War Story of Bloody Bill Anderson. Eakin Press. ISBN978-1-57168-640-4. Geiger, Mark (February 2009). "Indebtedness and the Origins of Guerrilla Violence in Civil War Missouri". The Journal of Southern History. 75 (1). Southern Historical Association: 49–82. JSTOR27650402.