Goodyear, S. H. (1893). Book-keeping by single and double entry (School ed.). Goodyear Pub. Co..
Lua i Stíl Chicago (17ú heag.)Goodyear, Samuel Horatio. Book-keeping by Single and Double Entry. School ed. Chicago, Ill., Cedar Rapids, Iowa: Goodyear Pub. Co., 1893.
Lua MLA (8ú heag.)Goodyear, Samuel Horatio. Book-keeping by Single and Double Entry. School ed. Goodyear Pub. Co., 1893.
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