Higgins, James M.
The management challenge : an introduction to management
Macmillan, 1994
Buku Teks
Northcraft, Gregory B.
Organizational behaviour : a management challenge
Dryden Press, 1990
Buku Teks
Frohman, Alan L.
The middle management challenge : moving from crisis to empowermwnt
McGraw-Hill, 1992
Buku Teks
Evans, Paul
the Global challenge : frameworks for international human resource management
McGraw-Hill , 2002
Buku Teks
LeBoeuf, Michael
The Peoductivity Challenge / Michael LeBoeuf
McGraw-Hills, 1982
Buku Referensi