Williams, J. R. (2008). Financial accounting (13th ed.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Williams, Jan R. Financial Accounting. 13th ed. Boston: McGraw-Hill, 2008.
Lua MLA (9ú heag.)Williams, Jan R. Financial Accounting. 13th ed. McGraw-Hill, 2008.
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