Karolyi, George
The Paranormal Phenomena Research Foundation, 2009
Buku Teks
Hilda Eveline
1998
UI - Skripsi (Membership)
Ezra Putranto Wahyudi
2017
UI - Skripsi (Membership)
Nadhifa Annisa Rosalinda
Fakultas Psikologi Universitas Indonesia, 2022
UI - Skripsi (Membership)
Nurcahyo Budi Waskito
2002
UI - Skripsi (Membership)