Greenstein, Carol Horn, author
Van Nostrand Reinhold, 1978
Buku Referensi
Chevalier, Jean, author
Blakwell, 1994
Buku Referensi
Vries, A.D. de, author
North-Holland, 1976
Buku Referensi
Eberhard, Wolfram, 1909-1989, author
St Edmundsbury Press, 1996
Buku Teks
Chiron Publications, 1993
Buku Referensi