Community leaders of the world
North Corolina : The American Biographical Institute, 1986,
 Buku Referensi
Windrow, Martin
The world's greatest military leaders : Two hundred of the most significant names in land warfare, from the 10th to the 20th century
Grange Books, 2000
 Buku Referensi
Maxwell, John C.
Good leaders ask great quetions
Menuju Insan Cemerlang (MIC), 2015
 Buku Teks
Tatum Syarifah Adiningrum
It right : the importance of communication skills to 21st century educational leaders
[Publisher not identified], 2011
 Artikel Jurnal
Ismail Khozen
Persepsi pemuka agama Islam mengenai kewajiban perpajakan: studi pada pimpinan pesantren di Kota Depok = Perceptions of Islamic religious leaders on taxation obligation: study on pesantren leaders in Depok City
2018
 UI - Skripsi Membership