Universitas Indonesia, 1998
UI - Skripsi Membership
Evarts, Harry F., author
Allyn & Bacon, 1966
Buku Teks
Punmia, B.C., author
Laxmi Publications, 1988
Buku Teks
Levin, Richard I., author
LPPM, 1977
Buku Teks
suluh priyanto, author
1997
UI - Tesis Membership