Akademika Pressindo, 1985
Buku Teks
Thomlinson, Ralph, author
Dickenson Publishing, 1975
Buku Teks
Kpedekpo, G.M.K.
Heinemann, 1982
Buku Teks
Wunsch, Guillaume J., author
Plenum Press, 1978
Buku Teks
Simanjuntak, Pardamean, Author
Program Pascasarjana Universitas Indonesia, 1998
UI - Tesis (Membership)