Kaarbo, Juliet, author
Wadsworth, Cengage Learning, 2011
Buku Teks
Schenkeveld, Maria A., author
John Benjamins, 1991
Buku Teks
Dalstar
In de Knipscheer, 1992
Buku Teks
Gay, Peter, author
Time-Life Books, 1966
Buku Teks
Berlin, Isaiah
The American Library, 1956
Buku Teks