Webster, T. (1992). World WordPerfect 5.1 for Windows desktop publishing by example. Rocklin: Prima Publishing.
Παραπομπή Chicago StyleWebster, Tony. World WordPerfect 5.1 for Windows Desktop Publishing By Example. Rocklin: Prima Publishing, 1992.
Παραπομπή MLAWebster, Tony. World WordPerfect 5.1 for Windows Desktop Publishing By Example. Rocklin: Prima Publishing, 1992.
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