Harvard Business School
Harvard Business Review Press, 2011
Buku Teks
Maxwell, John C., author
MIC (Menuju Insan Cemerlang), 2016
Buku Teks
Maxwell, John C., author
Menuju Insan Cemerlang, 2016
Buku Teks
Sample, Steven B.
Jossey-Bass, 2002
Buku Teks
Kent, Peter, author
Andi, 1996
Buku Teks