O`Neil, John R., author
McGraw-Hill, 1995
Buku Teks
Ramo, Simon
Hill and Wang, 1988
Buku Teks
Stone, Florence M., author
[American Management Association, ], 2003
eBooks
Dobson, Michael Singer, author
[American Management Association, ], 2001
eBooks
Tichy, Noel M.
Harperbusiness, 2002
Buku Teks