Caidin, Martin, author
Dutton, 1963
Buku Referensi
zhongguo Dabai Kequanshu Zongbianji Weiyuanhui
Zhongguo Dabai Kequanshu Chubanshe, 1998
Buku Referensi
Redden, Kenneth R., author
The Michie Company, 1980
Buku Referensi
Andersen, Dines
Copenhagen: Gyldendalske Boghandel, 1907
Buku Teks
American Psychiatric Press, 1984
Buku Referensi