Bernadetha Patricia, author
2001
UI - Skripsi (Membership)
Kristiansen, Kristian
Routledge, 1998
Buku Teks
Lesley
Grange Books, 1996
Buku Teks
Wheeler, Margaret
Hart Publishing Company, 1967
Buku Teks
Hole, Frank, author
Holt Renehart and Winston, 1966
Buku Teks