edited by Bertil Malmberg
North-Holland, 1968
Buku Teks
Ball, Martin J., author
Lawrence Erlbaum Associates, 2005
Buku Teks
Laver, John, author
Cambridge University Press, 1995
eBooks
Heffner, R.M.S., author
University of Wisconsin Press, 1960
Buku Teks
Abercrombie, David
Aldine, 1968
Buku Teks