Encyclopedia of religious and spiritual development
edited by Elizabeth M. Dowling, W. George Scarlett
Sage, 2006
 Buku Referensi
Encyclopedia of religious and spiritual development
edited by Elizabeth M. Dowling, W. George Scarlett
Sage Publications, 2006
 Buku Referensi
Eko Winarto
Konstruksi instrumen kenyamanan spiritual pada Pasien HIV Positif di beberapa Rumah Sakit Jawa Tengah = A construction of spiritual comfort instrument in Patients with HIV Positive in several Central Java's Hospital.
Fakultas Ilmu Keperawatan Universitas Indonesia, 2019
 UI - Disertasi (Membership)
Benjamin Abdurahman
Authoritative agency for tourism zone: an innovative instrument for destination development? / Benjamin Abdurahman
Kementerian Dalam Negeri RI, 2017
 Artikel Jurnal
Ward, Tara
Discover your psychic power: apractical guide to psychic development & spiritual growth
Arcturus, 1998
 Buku Teks