Hubbard, L. Ron, 1911-1986
Bridge Publications, Inc., 2012
Buku Referensi
edited by Hee Sook Oh
Seoul National University Press, 2015
Buku Teks
Kyung, Moon-hwang
Harvard University Asia Center, 2004
Buku Teks
Wilson, Ronald
Fakultas Teknik Universitas Indonesia, 2008
UI - Skripsi Open
Kang, Man-Gil
Folkestone Global Oriental 2006
Buku Teks