Finkelstein, Leo, author
McGraw-Hill , 2000
Buku Teks
Haru Deliana Dewi, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2006
UI - Tesis (Membership)
Sherman, Kenneth, author
Reston Publishing company, 1981
Buku Teks
Stallings, William, author
Macmillan, 1988
Buku Teks
Buchanan, Bill, author
Kluwer Academic Publishers, 1999
Buku Referensi