LUCAS, H., & LUCAS, H. (1973). Computers In Business Studies Harold Lucas. McDonald & Evans Ltd.
Lua i Stíl Chicago (17ú heag.)LUCAS, Harold, agus Harold LUCAS. Computers In Business Studies Harold Lucas. McDonald & Evans Ltd, 1973.
Lua MLA (8ú heag.)LUCAS, Harold, agus Harold LUCAS. Computers In Business Studies Harold Lucas. McDonald & Evans Ltd, 1973.
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