Sri Setianingsih Suwardi, author
Alumni, 1983
Buku Teks
United Nations Publications, [date of publication not identified]
Buku Teks
Wallace, Rebecca M. M.
Sweet & Maxwell, 1986
Buku Teks
Wilson, George Graton, author
Oceana Publication, 1964
Buku Teks
Drake, Joseph
Oceana Publication, 1964
Buku Teks