Mereghetti, Paolo, author
Abrams, 2012
Buku Referensi
Khan, M. Rafiq, author
Scottish Academic Press , 1985
Buku Teks
Root, Jane, author
Comedia, 1986
Buku Teks
Kristek, Vladimir, author
John Wiley & Sons, 1979
Buku Teks
McCarthy, Helen, author
Overlook Press, 1996
Buku Teks