Amsterdam John Benjamins Publishing 1983
Buku Teks
Service, Robert, author
Cambridge : Massachusetts Harvard University Press, 2003
Buku Teks
Wagner, W Wagner, Wilhelm
Cambridge Cambridge University Press 1908
Buku Teks
Wyld, H.C.
Oxford Blackwell 1953
Buku Teks
Alexandrova, Vera
New York Doubleday 1963
Buku Teks