Clamp, Cynthia G. L., author
Sage, 1999
Buku Teks
Bridson, Gavin D.R.
Gerland Publishing, Inc., 1994
Buku Teks
Patai, Raphael
Hraf Press , 1957
Buku Teks
Salmon, Claudine, author
Editions de la Maison des sciences de l'homme, 1981
Buku Referensi
Polman, Katrien
The Hague Martinus Nijhoff, 1981
Buku Referensi