editor Prajudi Atmosudirdjo [and others]
Ghalia Indonesia, 1987
Buku Teks
Crystal, Jill
Westview Press, 1992
Buku Teks
Slot, B.J.
E.J. Brill, 1991
Buku Referensi
Manfield, Peter
Hutchinson , 1990
Buku Teks
Casey, Paula
Planet Publishing, 1994
Buku Teks