Titman, L. (1995). The effective office: A handbook of modern office mgt. Excel.
Lua i Stíl Chicago (17ú heag.)Titman, Lionel. The Effective Office: A Handbook of Modern Office Mgt. New delhi: Excel, 1995.
Lua MLA (9ú heag.)Titman, Lionel. The Effective Office: A Handbook of Modern Office Mgt. Excel, 1995.
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