Dossey, Larry
HarperSan Francisco, 1993
Buku Teks
Ibn Qayyim Al-Jauziyah, Imam, author
Maktaba Dar-us-salam, 2003
Buku Teks
Grayson, Stuart, author
Dahara Prize, 2001
Buku Teks
Mark, Barbara, author
Simon and Schuster Rockfeller Center, 1997
Buku Teks
Diana Suryani, author
Fakultas Psikologi Universitas Indonesia, 2018
UI - Skripsi (Membership)