(1970). Management By Objectives In Action Editor By John W. Humble. McGraw-Hill.
Chicago-referens (17:e uppl.)Management By Objectives In Action Editor By John W. Humble. McGraw-Hill, 1970.
MLA-referens (8:e uppl.)Management By Objectives In Action Editor By John W. Humble. McGraw-Hill, 1970.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.