Gert Webelhuth edited by
Blackwell, 1995
Buku Teks
Lasnik, Howard, author
Blackwell , 1999
Buku Teks
Radford, Andrew, author
Cambridge University Press, 2003
eBooks
Radford, Andrew, author
Cambridge University Press, 1997
eBooks
Radford, Andrew, author
Cambridge University Press, 2009
eBooks