Oldcorn, R. (1989). Company accounts (Updated and rev. ed.). Macmillan.
Lua i Stíl Chicago (17ú heag.)Oldcorn, Roger. Company Accounts. Updated and rev. ed. Hampshire, England: Macmillan, 1989.
Lua MLA (8ú heag.)Oldcorn, Roger. Company Accounts. Updated and rev. ed. Macmillan, 1989.
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