Hunt, V. Daniel
Van Nostrand Reinhold Company, 1982
Buku Referensi
Amsterdam John Benjamins B.V. 1979
Buku Teks
Anderson, Edward E.
Addison-Wesley, 1983
Buku Teks
editor, Eduardo F. Camacho
Springer-Verlag, 2012
eBooks
Hayes, Denis
Wadsworth, 1977
Buku Teks