Zenger, John H.
The handbook for leaders: 24 lessons for extraordinary leadership
McGraw-Hill, 2004
 Buku Referensi
Perkins, Dennis N.T., 1953-
Leading at the edge : leadership Lessons from the extraordinary saga of Shackleton's Antarctic expedition
Amacom, 2012
 Buku Teks
Hughes, Richard L.
Leadership : enhancing the lessons of experince
Irwin/McGraw-Hill, 1999
 Buku Teks SO
Hughes, Richard L.
Leadership : enhancing the lessons of experience
McGraw-Hill, 2006
 Buku Teks SO
Hughes, Richard L.
Leadership: enhancing the lessons of experience
McGraw-Hill, 2012
 Buku Teks SO