Roth, A., author
North Holland, 1989
Buku Teks
Roth, Alexander, author
Noth-Holland, 1990
Buku Teks
edited by Karl Hurrle, F.M. Jablonski and Herbert Roth
Pergamon Press, 1972
Buku Referensi
O`Hanlon, John F., author
John Wiley & Sons, 1980
Buku Teks
Dede Sujadi, author
Universitas Indonesia, 1989
UI - Tesis Membership