M. Fadil, author
1989
UI - Tesis (Membership)
Slotnick, Daniel L., author
D.C. Heath, 1986
Buku Teks
Ince, D.C., author
Clarendon Press, 1988
Buku Teks
Brown, Chris, author
Prentice-Hall, 1994
Buku Teks
Davis, William S., author
Erlangga, 1991
Buku Teks