Kotter, John P., 1947-, author
The Free Press, 1982
Buku Teks
The Free Press, 1985
Buku Teks
Harvard Bussiness School Press, 1990
Buku Teks
Westwood, Roberta, author
American Society for Training & Development, 2011
eBooks
Harvard Business School Press, 2003
Buku Teks