Cannon, J. G. (1900). Clearing-houses: Their history, methods and administration. D. Appleton and Co..
Lua i Stíl Chicago (17ú heag.)Cannon, James Graham. Clearing-houses: Their History, Methods and Administration. New York: D. Appleton and Co., 1900.
Lua MLA (8ú heag.)Cannon, James Graham. Clearing-houses: Their History, Methods and Administration. D. Appleton and Co., 1900.
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