Anastasia Heni Wijayanti
Fakultas Psikologi Universitas Indonesia, 2001
UI - Skripsi (Membership)
Hauser, Arnold
Routledge & Kegan Paul, 1959
Buku Teks
Royce, James E.
McGraw-Hill, 1961
Buku Teks
Copenhagen : C.W.K. Gleeup Lund
Majalah, Jurnal, Buletin
Khan, Hazrat Inayat
The Sufi International Headquarter's, 1956
Buku Teks