Wolf, Stanley, author
Prentice-Hall, 1983
Buku Referensi
Cooper, William D. (William David), author
Erlangga, 1994
Buku Teks
Cooper, William D. (William David), author
Erlangga, 1993
Buku Teks
Mohamad Taufik, author
2014
UI - Skripsi (Membership)
LIPI, 1989
Buku Referensi