Heilenman, L. Kathy.
Harper & Row, [date of publication not identified]
Buku Teks
Dalstar
In de Knipscheer, 1992
Buku Teks
Olsoon, T
Stockholm, inst Suedois 1951
Buku Teks
Copson, E.T.
Cambridge University Press, 1968
Buku Teks
Bessette, Jean Michel
L`Harmatten, 1999
Buku Teks