ULLMANN, J. E. (1976). Theory And Problems Of Quantitative Methods In Management John E. Ullmann. McGraw-Hill.
Chicago-referens (17:e uppl.)ULLMANN, John E. Theory And Problems Of Quantitative Methods In Management John E. Ullmann. McGraw-Hill, 1976.
MLA-referens (8:e uppl.)ULLMANN, John E. Theory And Problems Of Quantitative Methods In Management John E. Ullmann. McGraw-Hill, 1976.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.