Kanngieber, Siegfried
Tubingen Max Niemeyer verlag 1972
Buku Teks
Iser, Wolfgang
Munchen : Wilhelm, 1984
Buku Teks
Kohring, Klause H., author
Munchen Mase Hueber 1973
Buku Referensi
Anderson, John, author
Amsterdam John Benjamins B.V. 1982
Buku Teks
Fuchs, Catherine
Paris Classiques Hachette 1975
Buku Teks