Williams, R. (1988). The power of running 1-2-3: Complete reference guide plus step-by-step business applications (Special ed.). Management Information Source.
Chicago-referens (17:e uppl.)Williams, Robert. The Power of Running 1-2-3: Complete Reference Guide Plus Step-by-step Business Applications. Special ed. Portland, Or: Management Information Source, 1988.
MLA-referens (9:e uppl.)Williams, Robert. The Power of Running 1-2-3: Complete Reference Guide Plus Step-by-step Business Applications. Special ed. Management Information Source, 1988.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.