Pullum, G.K.
University of Chicago Press, 1986
Buku Teks
Macmillan, 1970
Buku Teks
William J. Hardcastle, John Laver, Fiona E. Gibbon, editor
Wiley-Blackweell, 2013
Buku Teks
Artikel Jurnal
Harrington, Jonathan, 1950-, author
Wiley-Blackwell, 2010
Buku Teks