Witkin, R. K. (1987). Managing your business with Multiplan: Practical business solutions using Microsoft's award-winning PC spreadsheet. Microsoft Press.
Chicago-referens (17:e uppl.)Witkin, Ruth K. Managing Your Business with Multiplan: Practical Business Solutions Using Microsoft's Award-winning PC Spreadsheet. Redmond, Wash.: Microsoft Press, 1987.
MLA-referens (9:e uppl.)Witkin, Ruth K. Managing Your Business with Multiplan: Practical Business Solutions Using Microsoft's Award-winning PC Spreadsheet. Microsoft Press, 1987.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.