Bittel, Lester Robert
Executive skills program self-assessment tests
Alexander Hamilton Institute, 1986
 Buku Teks SO
Yovita Litani Putri Valentine
Hubungan antara Keterampilan Metakognisi dan Pendekatan Belajar Deep Approach serta Surface Approach pada Siswa SMP = The Relationship between Metacognitive Skills with Deep and Surface Approach to Learning in Junior High School Students
Fakultas Psikologi Universitas Indonesia, 2025
 UI - Skripsi Membership
Baldoni, John, 1952-
The leader's pocket guide: 101 indispensable tools, tips, and techniques for any situation
[American Management Association, ], 2013
 eBooks
Cadwell, Charles M.
Leadership skills for managers
[American Management Association, ], 2004
 eBooks
Bellows, Roger
Executive skills : their dynamics, and development
Prentice-Hall, 1962
 Buku Teks SO