Bradbrook, M.C. (Muriel Clara), 1909-1993, author
Cambridge University Press, 1980
Buku Teks
Roberts, Edgar V., author
Prentice-Hall, 1977
Koleksi Publik
Baggini, Julian, author
Palgrave Macmillan, 2012
Buku Teks
edited by Eric P. Hamp
Mouton, 1973
Buku Teks
Weiten, Wayne, author
Thomson/Wadsworth, 2008
Buku Teks