*John Carey Hall. ''The Tokugawa Legislation.'' Yokohama 1910, pp. 286-319 as related at [http://www.uni-erfurt.de/ostasiatische_geschichte/texte/japan/dokumente/17/tokugawa_legislation/index.htm http://www.uni-erfurt.de/ostasiatische_geschichte/texte/japan/dokumente/17/tokugawa_legislation/index.htm]. Accessed 30 July 2007.
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*John Carey Hall. ''The Tokugawa Legislation.'' Yokohama 1910, pp. 286-319 as related [http://www.uni-erfurt.de/ostasiatische_geschichte/texte/japan/dokumente/17/tokugawa_legislation/index.htm here]. Accessed 30 July 2007.
*Sansom, George (1961). "A History of Japan: 1334-1615." Stanford, California: Stanford University Press. pp401-406.
*Sansom, George (1961). "A History of Japan: 1334-1615." Stanford, California: Stanford University Press. pp401-406.
*Sansom, George (1963). "A History of Japan: 1615-1867." Stanford, California: Stanford University Press.
*Sansom, George (1963). "A History of Japan: 1615-1867." Stanford, California: Stanford University Press.