Jensen, Peter, 1946-
[American Management Association, ], 2012
eBooks
Harrold, Fiona
Gramedia, 2005
Buku Teks
Rully Roesli
Qanita, 2018
Buku Teks
Webster, Richard
Llewellyn Publication, 2009
Buku Teks
Covey, Stephen R.
Binarupa Akasara, 2002
Buku Teks